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, Chapter: 17 -Problem: 6 >> A prokaryote with which type of metabolism would be especially challenging to isolate and culture? Explain your answer. Refer to section 17.2B.
Answer Preview: Prokaryote would be challenging to isolate and culture which do n…

, Chapter: 15 -Problem: 6 >> The antibiotic streptomycin kills bacterial cells but not eukaryotic cells; diphtheria toxin kills eukaryotic cells but not bacteria. Which of these two substances do you predict would kill mitochondria and chloroplasts? Explain your answer.
Answer Preview: Streptomycin is a bacterial protein synthesis inhibitor. it bi…

, Chapter: 13 -Problem: 1 >> Refer to figure 13.25 and the chapter content to answer the following questions.1. Review the Survey the Landscape figure in the chapter introduction. What diagrams do scientists use to visualize evolutionary relationships? Add this term to the concept map.2. Write a phrase to connect fossils and biogeography and a separate phrase to connect development and DNA.3. Add the following terms to this c
Answer Preview: 1. Phylogenetic tree 2. Phrase to connect foss…

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, Chapter: 10 -Problem: 8 >> In fraggles, males are genotype XY and females are XX. Silly, a male fraggle, has a rare X-linked recessive disorder that makes him walk backwards. He mates with Lilly, who is a carrier for the disorder. What proportion of their male offspring will walk backwards?
Answer Preview: Silly is fraggle male he has xlinked recessive disorder So his genotype w…

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, Chapter: 10 -Problem: 3 >> Some people compare a homologous pair of chromosomes to a pair of shoes. Explain the similarity. How would you extend the analogy to the sex chromosomes for females and for males?
Answer Preview: In the same way, homologous chromosomes are the same length a…

, Chapter: 24 -Problem: 3 >> How does an exclusive relationship between a plant and its pollinator benefit each partner? What are the risks of exclusive partnerships?
Answer Preview: The exclusive relationship between plant and pollinator is mutualistic in nature in which both the p…

, Chapter: 19 -Problem: 3 >> How are terrestrial habitats different from aquatic habitats? List the adaptations that enable land plants to obtain resources, transport materials, and reproduce; explain how each adaptation contributes to a plant’s reproductive success on land.
Answer Preview: The terrestrial habitats are rich in the supply of oxygen and sunlight except for marshes, whic…

, Chapter: 10 -Problem: 1 >> In rose bushes, red flowers (FF or Ff ) are dominant to white flowers ( ff ). A true-breeding red rose is crossed with a white rose; two flowers of the F1 generation are subsequently crossed. What will be the most common genotype of the F2 generation?
Answer Preview: When true breeding red roses [FF] are crossed with white roses …

, Chapter: 26 -Problem: 4 >> Describe the distribution of charges in the membrane of a resting neuron.
Answer Preview: Neurons are the basic structural and functional units of the nervous system. They are excitable cell…

, Chapter: 20 -Problem: 19 >> Why might it be challenging to produce drugs that treat fungal infections without harming human cells?
Answer Preview: Fungus are eukaryotic in nature. It has 80s ribosome, DNA and many more organelles which a…

, Chapter: 13 -Problem: 2 >> What types of information are used to hypothesize how species are related to one another by descent from a shared ancestor? Give an example of how multiple types of evidence can support one another.
Answer Preview: There are much evidence that can actually provide the information which could be li…

, Chapter: 21 -Problem: 12 >> Create lists of animal phyla that(a) Are cephalized,(b) Have an incomplete digestive tract,(c) Have segmented bodies,(d) Have a coelom.
Answer Preview: Phylum a) Cephalized * annelids * arthopods * all vertebrates b) Inc…

, Chapter: 18 -Problem: 8 >> Why might overwatering your plants make them more susceptible to infection by some kinds of heterotrophic protists?
Answer Preview: Many protists are aquatic and need water in order to survive. …

, Chapter: 10 -Problem: 6 >> Genes Q, R, and S are on the same chromosome. The crossover frequency between S and Q is 5%, the crossover frequency between Q and R is 30%, and the crossover frequency between R and S is 35%. Use this information to create a linkage map for the chromosome.
Answer Preview: The crossover frequency between S and Q is 5%. this means the di…

, Chapter: 26 -Problem: 5 >> What is the connection between the threshold potential and an action potential? What happens to sodium and potassium ions as the membrane is depolarized and repolarized? How does the membrane restore its resting potential?
Answer Preview: Threshold potential is basically the critical level to which membrane potential must be depolarized …

, Chapter: 20 -Problem: 21 >> Create a graph showing the number of species in each group of fungi. Which group is least diverse? Based on the habitats and reproductive structures of these fungi, propose an explanation for their relatively low diversity.
Answer Preview: Sub-Division Zygomycotina is least diverse because the ma…

, Chapter: 13 -Problem: 11 >> Many species look similar as embryos. What causes them to appear different as adults? Why does the study of development give insights into evolutionary relationships?
Answer Preview: The embryo can be described as it is the fertilized egg or zygote is the union of male(sperm) and fe…

, Chapter: 24 -Problem: 10 >> How does senescence occur?
Answer Preview: Table of Contents: - Explanation Senescent cell Causes Senescence effects Senescence: - Senescence is a process in which cell reach permanent growth arrest without the death of cell as the where cell …

, Chapter: 15 -Problem: 9 >> Distinguish among the terms primate, hominid, hominin, and Homo.
Answer Preview: The term primate refers to an order of mammals, within which humans are involved. This group i…

, Chapter: 15 -Problem: 5 >> The amoeba Pelomyxa palustris is a single-celled eukaryote with no mitochondria, but it contains symbiotic bacteria that can live in the presence of O2. How does this observation support the endosymbiont theory?
Answer Preview: The theory of endosymbiosis proposes that some of the organelles …

, Chapter: 25 -Problem: 3 >> List and describe six types of connective tissue.
Answer Preview: Connective Tissue :- 1 Areolar connective tissue :- In the matrix irregular shaped cell and two kind of Fibers white fibers (Made of collagen) and yel…

, Chapter: 20 -Problem: 16 >> Use the Internet to find examples of chytrids, zygomycetes, ascomycetes, and basidiomycetes that cause diseases in plants or animals. How does each fungus infect a host and spread to new hosts? What can humans do to fight each disease? What are the costs and benefits of doing so?
Answer Preview: CHYTRIDIOMYCOSIS is an amphibian chytrid fungus disease caused by B. dendrobatidis. it commonly affects hundreads of species of endangered frogs in Au…

, Chapter: 10 -Problem: 11 >> X inactivation explains the large color patches in calico cat fur and the smaller patches in tortoiseshell cat fur. In which type of cat do you expect X inactivation occurs earlier in development? Why?
Answer Preview: In Calico cat, X inactivation occurs earlier in development. The calico cat is …

, Chapter: 22 -Problem: 7 >> Suppose you find a flowering plant that has leaves with netted veins. Using only this information, what inferences can you make about the internal anatomy of the plant?
Answer Preview: There are several inferences that can be made based on look…

, Chapter: 17 -Problem: 5 >> Describe your own metabolic classification: Are you a photoautotroph, photoheterotroph, chemoautotroph, or chemoheterotroph? Are you an obligate aerobe, an obligate anaerobe, or a facultative anaerobe? Are you a nitrogen fixer?
Answer Preview: We humans are chemoheterotroph because- chemo- chemicals; heterotr…

, Chapter: 10 -Problem: 1 >> Select one gene mentioned in the chapter; then explain the link between an organism’s genotype (for that gene) and its corresponding phenotype. Make sure to use the term protein in your answer.
Answer Preview: The genotype of a creature is characterized as the amount of every one of its qualities. The aggregate of a living being is the recognizable physical or biochemical attributes of a living being, dicta…

, Chapter: 20 -Problem: 4 >> In figure 20.5, which groups of fungi are monophyletic? What term can you use to describe the other groups? Figure 20.5 Transcribed Image Text: Dikaryotic cells Basidiomycota Basidium with basidiospores Ascomycota Ascus with ascospores Glomeromycota Large asexual spores only -Zygomycota Zygospores A
Answer Preview: The fungi belonging to monophylet…

, Chapter: 12 -Problem: 1 >> List and describe five mechanisms of evolution.
Answer Preview: There are majorly Five type Mechanisms for evolution: 1) Genetic Drift 2) Natural Selection 3)Gene Flow 4) Non Random Mating 5) Mutation 1) Genetic Dr…

, Chapter: 19 -Problem: 1 >> Refer to figure 19.21 and the chapter content to answer the following questions.1. Review the kingdoms within domain Eukarya, using the Survey the Landscape figure in the chapter introduction. To which group of eukaryotes are plants most closely related? Use a connecting phrase to add that group to the Pull It Together concept map.2. Circle each plant group that produces spores.3. How do bryophyte
Answer Preview: Bryophtes Kingdom plants Seedless vascular plants seed plants Gymnosperms Angiosperms 1. Gymn…

, Chapter: 11 -Problem: 4 >> Compare and contrast the use of the DNA polymerase enzyme in DNA sequencing and PCR.
Answer Preview: DNA polymerase makes new copies of DNA by sliding along the ss DNA template inserti…

, Chapter: 10 -Problem: 9 >> Would you expect dominant X-linked illnesses to affect women as often as men? Explain your answer.
Answer Preview: Yes, the x linked dominant illness will affect the …

, Chapter: 19 -Problem: 10 >> The immature fruit of the opium poppy produces many chemicals that affect animal nervous systems. In what way might these chemicals benefit the plant?
Answer Preview: Benefits for plant:- Alkaloids production in unripened fruits of …

, Chapter: 14 -Problem: 5 >> On figure 14.20, circle a monophyletic group, a paraphyletic group, and a polyphyletic group. Describe the qualities that define how each group is classified. Figure 14.20 Transcribed Image Text: • Light bones • 3-toed foot Coelophysis Last • Wishbone • Breastbone • Loss of 4th and 5th fingers commo
Answer Preview: The answer to the given question has been solved as under; Each of the monophyletic, paraphyletic an…

, Chapter: 17 -Problem: 11 >> Stomach ulcers, once thought to be entirely a product of spicy food or high stress, are now known to be caused by bacteria (Helicobacter pylori). How has ulcer treatment changed because of this new knowledge?
Answer Preview: CHANGING OF ULCER TREATMENT:- Changing medical beliefs and practice takes time. For nearly 100 years …

, Chapter: 11 -Problem: 2 >> Transgenic crops often require fewer herbicides and insecticides than conventional crops. In that respect, they could be considered environmentally friendly. Use the Internet to research the question of why some environmental groups oppose transgenic technology.
Answer Preview: Though transgenic crops are considered environment friendly in some aspects even then, some environ…

, Chapter: 16 -Problem: 1 >> Describe the basic parts of a virus and how each contributes to viral replication.
Answer Preview: Viruses are acellular genetic particles that use living cells for their repl…

, Chapter: 14 -Problem: 4 >> Which of the groups in figure 1.9 represent clades? Which groups do not represent clades? Explain your answers. Figure 1.9 Transcribed Image Text: DOMAIN BACTERIA DOMAIN ARCHAEA DOMAIN EUKARYA • Celils lack nuclel (prokaryotic) • Most are unicelular •Cells lack nuciel (prokaryotic) • Cells contain n
Answer Preview: Cl ade, also known as a monophyletic group or natural group , is a group of organisms that are mon…

, Chapter: 17 -Problem: 3 >> Give five examples that illustrate how bacteria and archaea are important to other types of organisms.
Answer Preview: 1. Archaea possess a nonphosphorylated Entner-Doudoroff pathway for glucose …

, Chapter: 11 -Problem: 10 >> If a cell’s genome is analogous to a cookbook and a gene is analogous to a recipe, what is an analogy for preimplantation genetic diagnosis? For gene testing? For gene therapy?
Answer Preview: Pre implantation genetic diagnosis …

, Chapter: 20 -Problem: 14 >> List some places where you might find ascomycetes.
Answer Preview: Ascomycota belongs to fungi that contains the majo…

, Chapter: 9 -Problem: 4 >> What is the difference between haploid and diploid cells? Are your skin cells haploid or diploid? What about germ cells? Gametes?
Answer Preview: The number of chromosomes in the nucleus of a cell serves as a major difference between haploid and …

, Chapter: 19 -Problem: 15 >> Compare and contrast the life cycles of the four groups of plants. How does each group represent a variation on the common theme of alternation of generations?
Answer Preview: Alternation of generation is the way of plants reproduce. Ther…

, Chapter: 15 -Problem: 4 >> List a logical sequence of events that starts with an early prokaryote and ends with a modern multicellular eukaryote.
Answer Preview: Prokaryotes are smaller, simple cells that do not have a nuclear envelope, cytoskeleton,, organelles, and their genetic material is simple than eukary…

, Chapter: 17 -Problem: 7 >> Ernst Mayr defined a biological species as a population whose members can exchange genetic material during reproduction. How does horizontal gene transfer complicate this definition of species?
Answer Preview: 1 Ernst Mayr gave the modern definition of Species. 2 It …

, Chapter: 12 -Problem: 2 >> How did James Hutton, Georges Cuvier, Georges-Louis Buffon, Jean Baptiste de Lamarck, Charles Lyell, and Thomas Malthus influence Charles Darwin’s thinking?
Answer Preview: Charles Darwin may be known for his originality and genius, but he was influenced heavily by many people throughout his life. Some were personal collaborators, some were influential geologists or econ…

, Chapter: 20 -Problem: 18 >> Describe how experiments might show thata. chytrids are killing amphibians.b. fungi benefit more from a lichen relationship than do algae.c. bacteria help leaf-cutting ants cultivate one fungus while killing another.d. overharvesting of mycorrhizal basidiomycetes harms forest health.e. mold on a building’s walls can cause illness in the building’s occupants.
Answer Preview: A Chytrid is a fungus that causes chytridomycosis in an infectious disease,that infects amphibians w…

, Chapter: 8 -Problem: 9 >> List the ways that binary fission is similar to and different from mitotic cell division.
Answer Preview: Binary fission and mitosis division are different in many ways such as 1. Binary fission mostly foun…

, Chapter: 15 -Problem: 15 >> Compare today’s changing culture to biological evolution by means of natural selection. How are they similar? How are they different? Can you think of examples of knowledge, beliefs, and behaviors that were appropriate in one set of conditions but that humans selected against as conditions changed?
Answer Preview: Natural selection is a force of evolution where superior variants capable to survive i…

, Chapter: 15 -Problem: 2 >> List three ways that studying the history of life helps us understand life’s current diversity, and predict how diversity might change in the future.
Answer Preview: The study of living thing is called Biology It is said that earth is almost 4 Billion ye…

, Chapter: 19 -Problem: 2 >> Analyze the alternation of generations common to all plants. If you analyzed the DNA of all of the gametes produced by one gametophyte, would you see variation among the gametes?
Answer Preview: Alternation of generation means there are more than one generation, which alternate/re…

, Chapter: 13 -Problem: 1 >> Explain the significance of the geologic timescale in the context of evolution.
Answer Preview: The theory of organic evolution is used to establish the geological time …

, Chapter: 15 -Problem: 14 >> In what ways has culture been an important factor in human evolution?
Answer Preview: culture is an important to factor in human evolution that cultural …

, Chapter: 12 -Problem: 6 >> Explain how harmful recessive alleles can persist in populations, even though they prevent homozygous individuals from reproducing.
Answer Preview: The genes have two alleles present for them, dominant allele and recessive allele. The Dominant alle…

, Chapter: 17 -Problem: 1 >> Explain why the antibiotics penicillin and polymyxin are not effective against archaea. (Review this chapter’s Apply It Now box.)
Answer Preview: Penicillin inhibits peptidoglycan synthesis in the case of bacteria, which is an integral part of the cell wall for providing mechanical stability. Th…

, Chapter: 10 -Problem: 12 >> How do the pedigrees differ for autosomal dominant, autosomal recessive, and X-linked recessive conditions?
Answer Preview: Autosomal dominant- no skip of generation. two affected parents have …

, Chapter: 21 -Problem: 3 >> List the criteria used to distinguish(a) Animals from other organisms;(b) Vertebrates from invertebrates;(c) Protostomes from deuterostomes;(d) Ectotherms from endotherms.
Answer Preview: (A) Set of criteria used to distinguish animals from other organism are given as -: (1) Based on cellular level - Animals are multicellular. (2) Based …

, Chapter: 13 -Problem: 5 >> Index fossils represent organisms that were widespread but lived during relatively short periods of time. How might index fossils be useful in relative dating?
Answer Preview: Radiometric dating is a method used to figure out how old rocks are by looking at the am…

, Chapter: 20 -Problem: 3 >> Review figure 20.5. Are fungi more closely related to animals or to plants? What characteristics do fungi share with plants? What characteristics do fungi share with animals? Transcribed Image Text: Dikaryotic cells Basidiomycota Basidium with basidiospores Ascomycota Ascus with ascospores Glomeromy
Answer Preview: Fungi is more closely to animals than plants. Fungi is related to both plants …

, Chapter: 10 -Problem: 8 >> Many men with “Y chromosome infertility” are unable to produce sperm. Do you think this condition is typically inherited? Explain your answer.
Answer Preview: Y chromosome infertility is the condition that causes male infertility. …

, Chapter: 21 -Problem: 5 >> Analyze the evolutionary tree in figure 21.2, and then write an argument supporting or refuting this statement: Annelids are more closely related to flatworms than to roundworms. Figure 21.2 Transcribed Image Text: Deuterostomes Chordates Mouth arises Echinoderms from second Bilateria opening in emb
Answer Preview: Annelids are more closely related to flatworms than to roundworms; I SUPPORT this …

, Chapter: 10 -Problem: 4 >> Two lizards have green skin and large dewlaps (genotype Gg Dd).(a) If 32 offspring are born, how many of the offspring are expected to be homozygous recessive for both genes?(b) What proportion of the offspring will have the dominant phenotype for both traits? Assume that the traits assort independently.
Answer Preview: The answer to the given question has been solved as under; It has been said in the question that two …

, Chapter: 18 -Problem: 1 >> Refer to figure 18.22 and the chapter content to answer the following questions.1. Review the Survey the Landscape figure in the chapter introduction, and then add evolution, domain Eukarya, plants, fungi, and animals to the Pull It Together concept map.2. Name at least one unique characteristic of each protist group in figure 18.22.3. Molecular data have changed protist classification. Use a red
Answer Preview: 1. 2. Euglenoid - Autotrops in presence of sunlight, when deprived of sunlight behave as heterotroph…

, Chapter: 8 -Problem: 8 >> Describe what will happen to a cell if interphase happens but mitosis does not.
Answer Preview: During interphase, the cell grows and produces proteins. It also replicates its DNA as i…

, Chapter: 15 -Problem: 12 >> How do you predict a scientist would respond to a question about whether humans “evolved from monkeys”?
Answer Preview: To understand the evolutionary relationship between two or…

, Chapter: 9 -Problem: 12 >> Provide examples to support or refute this statement: The products of meiosis are always haploid cells, whereas the products of mitotic division are always diploid cells.
Answer Preview: Meiosis produces 4 haploid cells, from one diploid parent cell ex: - Meiosis occurs i…

, Chapter: 20 -Problem: 11 >> Describe the difference between sexual and asexual reproduction in zygomycetes. Why might asexual reproduction be more common than sexual reproduction?
Answer Preview: Asexual Reproduction Sexual Reproduction 1. Occurs in prokaryotic microorganism and in some eukaryot…

, Chapter: 10 -Problem: 15 >> Design an experiment using twins to determine the degree to which autism is genetic or environmental.
Answer Preview: there are so, many categories of genetics and environmental factors …

, Chapter: 15 -Problem: 10 >> Explain how opposable thumbs, large brains, and binocular vision are adaptive to primates.
Answer Preview: 1-opposable thumbs - initial primates were used to live on trees and branches . for l…

, Chapter: 11 -Problem: 1 >> Refer to figure 11.20 and the chapter content to answer the following questions.1. Review the Survey the Landscape figure in the chapter introduction. Given DNA’s role in the cell, why do the basic tools of DNA technology summarized in figure 11.20 have applications in such diverse fields of study?2. How does PCR relate to DNA profiling and preimplantation genetic diagnosis?3. Add the terms restri
Answer Preview: 1 Globally , the population of the world is increasing very fast day by day. To control the demands of food and to meet the challenges of human entity, man started manipulating genes. There are numero…

, Chapter: 16 -Problem: 9 >> Why do antibiotics kill bacteria but leave viruses unharmed?
Answer Preview: Antibiotics are those drugs used to treat bacterial infections. It should be …

, Chapter: 13 -Problem: 3 >> Describe six types of fossils and how they form. What present environmental conditions might preserve today’s organisms to form the fossils of the future?
Answer Preview: These are the six main types of fossils 1. Trace fossil - which is usually formed by the indirect ev…

, Chapter: 14 -Problem: 3 >> Why do species become extinct? Choose a species that has recently become extinct, and describe some possible evolutionary consequences to other species that interacted with that species before its extinction.
Answer Preview: Interspecific competition between species for food, shelter and Habitat loss is the …

, Chapter: 18 -Problem: 10 >> Suppose someone hands you a microscope and a single-celled organism. Create a flow chart that you could use to identify the specimen.
Answer Preview: flowchart of viewing a single celled organism under the microsc…

, Chapter: 8 -Problem: 12 >> Why do chemotherapy and radiation sometimes kill hair follicle cells, while leaving many other body cells unaffected?
Answer Preview: Radiation and chemotherapy both attack rapidly dividing cells in our bo…

, Chapter: 9 -Problem: 7 >> Draw all possible metaphase I chromosomal arrangements for a cell with a diploid number of 8. How many unique gametes are possible for this species? Is this number an underestimate or an overestimate? Why?
Answer Preview: there can be four possible combinations of metaphase 1 unique gametes possi…

, Chapter: 16 -Problem: 3 >> Why is it inaccurate to refer to the “growth” of viruses?
Answer Preview: Viruses are not living things. Viruses are complicated assemblies of molecules, in…

, Chapter: 9 -Problem: 3 >> Sketch the relationships among mitosis, meiosis, and fertilization in a sexual life cycle.
Answer Preview: Sexual life cycles involve an alteration b…

, Chapter: 9 -Problem: 1 >> Explain why evolution often selects traits that promote genetic diversity.
Answer Preview: Evolution often selects traits that promote genetic diver…

, Chapter: 21 -Problem: 6 >> Like sponges, plants are sessile organisms, but plants and sponges have dissimilar appearances. What important difference between sponges and plants explains this observation?
Answer Preview: Sponges are different from plants because they obtain their food by ca…

, Chapter: 10 -Problem: 2 >> List three genes (mentioned in this chapter or not) that do not affect physical appearance. Do these genes contribute to an organism’s phenotype?
Answer Preview: Genes those do not effect the physical appearance of an organis…

, Chapter: 15 -Problem: 16 >> The video game “Spore” invites players to design creatures and guide them through “five stages of evolution.” Search the Internet for information about “Spore”; describe how evolution in this game is similar to, and different from, the evolution of life on Earth.
Answer Preview: The hype machine behind Spore, the highly anticipated Electronic Arts Inc. game developed by Sims City creator Will Wright, was enough to create The Dark Knight look like alittle , art house film. Ear…

, Chapter: 15 -Problem: 7 >> List the major events of the Precambrian supereon and of the Paleozoic, Mesozoic, and Cenozoic eras.
Answer Preview: Precambrian supereon : 1. First soft bodied animals appear, first multicellular life appear. 2. Phot…

, Chapter: 18 -Problem: 3 >> Describe the relationship between nutrient pollution and harmful algal blooms. Why might harmful algal blooms be more frequent in summer? What steps could coastal communities take to prevent nutrient pollution?
Answer Preview: The nutrient pollution is nothing but the excess accumulation of nitrogen and phosphorus in any water body. The primary sources of nitrogen and phosph…

, Chapter: 8 -Problem: 10 >> Suppose you learn of a study in which ginger slowed tumor growth in mice for 30 days. What questions would you ask before deciding whether to recommend that a cancer-stricken relative eat more ginger?
Answer Preview: -Tumour cells can be benign or malignant. The rate of growth and degre…

, Chapter: 13 -Problem: 6 >> What hypothesis did Alfred Russel Wallace make about the unique birds and mammals on either side of an imaginary line in the Malay Archipelago? How did the eventual explanation for Wallace’s line demonstrate the predictive power of evolution?
Answer Preview: This is the question about evidence that Darwin used to develop his thinking on evolution in the theory of natural selection. So here we are trying to …

, Chapter: 16 -Problem: 6 >> As described in this chapter’s Burning Question, human papillomavirus (HPV) infects cells of the skin and genitals, but it has never been shown to infect T cells. If a researcher put HPV and T cells in the same petri dish, which step of HPV replication would fail? Explain your answer.
Answer Preview: The below diagram represents the T-cells immune control of HPV infection. Optimal …

, Chapter: 12 -Problem: 9 >> Jellyfish Lake, located on the Pacific island of Palau, is home to millions of jellyfish. Many years ago, sea levels dropped and the jellyfish were trapped in the basin. The lake contains no predators, and the jellyfish’s sting has weakened. Jellyfish Lake is now a popular tourist attraction where snorkelers can swim among the jellyfish. Explain how Jellyfish Lake is evidence for evolution.
Answer Preview: Sometimes in their evolutionary past a random mutation (or series of mutations) occur…

, Chapter: 20 -Problem: 5 >> What characteristics distinguish each phylum of fungi?
Answer Preview: Fungi are heterotrophs with cell wall composition similar to animals Based on the …

, Chapter: 10 -Problem: 13 >> In the following pedigree, is the disorder’s mode of inheritance autosomal dominant, autosomal recessive, or X-linked recessive? Explain your reasoning. Transcribed Image Text: 1 2 II 1 2 3 4 5 6 7 8 II 1 2 3 4 5 6 7
Answer Preview: The given pedigree in the given image is the Autosomal dominan…

, Chapter: 12 -Problem: 10 >> Suppose that gene A does not affect fitness in a small population of earthworms contained in a glass enclosure. For 20 worm generations, a pair of curious scientists study the frequencies of the A gene’s two alleles (A and a). In generation 1, 75% of the alleles are A. By generation 5, the a allele has become more common than A. Then, by generation 20, the A allele is most common again. What is th
Answer Preview: An ensemble dominant all that has, very negative effects on individuals who possess it. and it appar…

, Chapter: 9 -Problem: 1 >> Refer to figure 9.24 and the chapter content to answer the following questions.1. Review section 9.5 and the Survey the Landscape figure in the chapter introduction. What two processes in meiosis I generate genetic variation among gametes? What other process produces genetic variation?2. Fit the following terms into this concept map: chromatid, centromere, nondisjunction, fertilization, and mitosi
Answer Preview: 1) Meiosis begin with a parent cell that is diploid, meaning it has 2 copies of each chromosome. Mai…

, Chapter: 21 -Problem: 7 >> Using the evolutionary trees in this chapter, compare cnidarians to sponges and to the clade containing flatworms, mollusks, and annelids.
Answer Preview: According to the evolutionary tree:-Sponges(Porifera), Cnidarians …

, Chapter: 10 -Problem: 14 >> How do heart disease and cancer illustrate diseases that reflect both genetic and environmental influences?
Answer Preview: The genetic influence of disease involves the presence of genes that are responsible for causing …

, Chapter: 11 -Problem: 7 >> Unneeded genes in an adult animal cell are permanently inactivated, making it impossible for most specialized cells to turn into any other cell type. How does this arrangement save energy inside a cell? Why does the ability to clone an adult mammal depend on techniques for reactivating these “dormant” genes?
Answer Preview: Unneeded genes are kept inactivated because they don't have to play specific role in the …

, Chapter: 17 -Problem: 13 >> Probiotics are dietary supplements consisting of live bacteria that are normally found in the human digestive tract. Some people claim that consuming probiotics promotes digestive health. Design an experiment that would help you determine(a) Whether the bacteria in a probiotic supplement survive the trip from the mouth, through the stomach and small intestine, and into the large intestine and(b) W
Answer Preview: A. Experiment to determine whether the bacteria survive in mouth, stomach and …

, Chapter: 9 -Problem: 2 >> Describe a situation in which asexual reproduction might be more likely than sexual reproduction.
Answer Preview: Asexual reproduction is more likely when there is very little scope for change. Example: …

, Chapter: 21 -Problem: 1 >> Compare the nine major animal phyla in the order in which the chapter presents them, listing the features for each group.
Answer Preview: The nine major animal phylum are in order- 1. PORIFERA Characteristics- Porifera are aquatic mostly Marine animals except spongilla which is freshwate…

, Chapter: 12 -Problem: 1 >> Refer to figure 12.24 and the chapter content to answer the following questions.1. Review the Survey the Landscape figure in the chapter introduction. When has evolution occurred in life’s history? How do scientists know that evolution has occurred in the past?2. Describe a situation in which each of the five mechanisms of evolution shown in the concept map would occur.3. Add the terms genotype, p
Answer Preview: pointments 1) The scientific evi ming volumes of and the …

, Chapter: 21 -Problem: 8 >> Compare the defining features of flatworms to those of other protostomes and deuterostomes. What features are similar among these groups? What features are different?
Answer Preview: Flatworms are included under protostomes because blastopores form the future mouths, Spi…

, Chapter: 9 -Problem: 10 >> What is the relationship between nondisjunction and aneuploidy?
Answer Preview: The relationship between nondisjunction and aneupl…

, Chapter: 18 -Problem: 5 >> How is it adaptive for a red alga to have pigments other than chlorophyll?
Answer Preview: All algae are photosynthetic. This means they use …

, Chapter: 13 -Problem: 8 >> Why is it important for evolutionary biologists to be able to distinguish between homologous and analogous anatomical structures?
Answer Preview: For this question, you should have the right knowledge about evolution. Evolution is a phenomenon re…

, Chapter: 19 -Problem: 8 >> Your friend John is admiring what he calls “little flowers” on a moss. How would you correct his statement? In what way might those structures be similar to flowers?
Answer Preview: The reproductive part of a plant is known as Flower. A flower contains sepal, petal, androeci…

, Chapter: 13 -Problem: 12 >> How do biologists use sequences of proteins and genes to infer evolutionary relationships?
Answer Preview: The genetic composition of an individual determines it's characters. Genes are expressed in the …

, Chapter: 20 -Problem: 1 >> Refer to figure 20.25 and the chapter content to answer the following questions.1. Review the Survey the Landscape figure in the chapter introduction, and add eukaryotes, animals, plants, protists, and prokaryotes to the Pull It Together concept map. Then connect each of the five groups of fungi to another group of organisms to indicate interactions between the two groups.2. Add at least one chara
Answer Preview: A) Whitaker proposed that organisms should be broadly divided into kingdoms, based on certain characters like the structure of the cell, mode of nutrition, the source of nutrition, interrelationship, …

, Chapter: 13 -Problem: 4 >> The bubonic plague swept through western Europe in 1348. Suppose researchers use 14C dating on the skeletons of suspected plague victims, and they discover that about 50% of the original amount of 14C remains in the bones. Are the bones the remains of plague victims?
Answer Preview: Step 1 of 2 The bubonic plague was spreaded through Western Europe in 1348 and those victims who hav…

, Chapter: 12 -Problem: 7 >> Fraggles are mythical, mouselike creatures that live underground beneath a large vegetable garden. Of the 100 Fraggles in this population, 84 have green fur, and 16 have gray fur. A dominant allele F confers green fur, and a recessive allele f confers gray fur. Assuming Hardy–Weinberg equilibrium is operating, answer the following questions.(a) What is the frequency of the gray allele f ?(b) What
Answer Preview: According to Hardy-Weinberg equilibrium, sum of all types of allele is 1. (let, p and q are two type…

, Chapter: 10 -Problem: 7 >> Three babies are born in the hospital on the same day. Baby X has type B blood; Baby Y has type AB blood; Baby Z has type O blood. Use the information in the following table to determine which baby belongs to which couple. Assume that all individuals are homozygous dominant for the H gene. Transcribed Image Text:
Answer Preview: Case 1 of parents Logan and Leslie Leslie is AB Logan is BB or BO So their chil…

, Chapter: 8 -Problem: 1 >> Refer to figure 8.23 and the chapter content to answer the following questions.1. Review the Survey the Landscape figure in the chapter introduction and then connect DNA and proteins to the Pull It Together concept map in at least two ways each.2. Add DNA polymerase, nucleotides, and complementary base pairing to this concept map.3. What is the relationship between mitotic cell division and apopto
Answer Preview: (1) The interphase is divided into 3 stages(As indicated in figure above) (a) G1 phase: The protein …

, Chapter: 15 -Problem: 1 >> Refer to figure 15.31 and the chapter content to answer the following questions.1. Review the Survey the Landscape figure in the chapter introduction and add life’s history, DNA evidence, and fossil evidence to the Pull It Together concept map.2. Arrange the 14 major events at the bottom of the concept map in chronological order; indicate when the major extinction events occurred. What was the imp
Answer Preview: 1. According to BIG BANG THEORY proposed by Abbe Lemaitre, our solar system was created from gaseous cloud called solar nebula. The earth is about 4 6 billion years ago. . Primitive atmosphere of eart…

, Chapter: 9 -Problem: 9 >> List examples of abnormalities in chromosome number and structure. Explain how each relates to an error in meiosis.
Answer Preview: Abnormalities in chromosome structure usually happens due to defect in the process of me…

, Chapter: 14 -Problem: 1 >> What type of reproductive barrier applies to each of these scenarios?a. Water buffalo and cattle can mate, but the embryos die early in development.b. Scientists try to mate two species of dragonfly that inhabit the same pond at the same time of day. However, females never allow males of the other species to mate with them. c. One species of reed warbler is active in the upper parts of the canopy,
Answer Preview: The answer to the given question has been solved as under; Reproductive isolating mechanisms play an …

, Chapter: 10 -Problem: 10 >> A family has an X-linked dominant form of congenital generalized hypertrichosis (excessive hairiness). Although the allele is dominant, males are more severely affected than females. Moreover, the women in the family often have asymmetrical, hairy patches on their bodies. How does X chromosome inactivation explain this observation?
Answer Preview: The answer to the given question has been solved as under; Mammalian sex determination is based on a pair of chromosomes, known as sex chromosomes: X …

, Chapter: 14 -Problem: 2 >> How does natural selection predict a gradualistic mode of evolution? Does the presence of fossils that are consistent with punctuated equilibrium mean that natural selection does not occur?
Answer Preview: Charles Robert Darwin an English naturalist and biologist who proposed the theory of natural selecti…

, Chapter: 10 -Problem: 2 >> In Mexican hairless dogs, a dominant allele confers hairlessness. However, inheriting two dominant alleles is lethal; the fetus dies before birth. Suppose a breeder mates two dogs that are heterozygous for the hair allele. Draw a Punnett square to predict the genotypic and phenotypic ratios of the puppies that are born.
Answer Preview: Hairlessness is dominant Allele Hetrozygous met …

, Chapter: 15 -Problem: 1 >> Explain how the origin of self-replicating molecules was critical to life’s origin.
Answer Preview: Self replicating molecule play a important role in life's origin. Life on earth begin from a single …

, Chapter: 15 -Problem: 3 >> Review the structures of nucleic acids and proteins in chapter 2. What chemical elements had to have been in primordial “soup” to generate these organic molecules?
Answer Preview: Primordial soup consists of: atoms such as C,H,O,…

, Chapter: 12 -Problem: 5 >> Write a paragraph that describes the connections among the following terms: gene, nucleotide, allele, phenotype, population, genetic variation, natural selection, and evolution.
Answer Preview: Gene is the functional unit of DNA. It is the genetic constituent of DNA responsible for a specific …

, Chapter: 13 -Problem: 7 >> Suppose that collaborating research teams found fossils of the same extinct species in eastern South America and western Africa. What can the researchers conclude about the age of these fossils without using absolute or relative dating techniques?
Answer Preview: Researchers can conclude the age of these fossils without using absolute or relative dating tec…

, Chapter: 12 -Problem: 3 >> Explain how understanding evolution is important to medicine, agriculture, and maintaining the diversity of organisms on Earth.
Answer Preview: The evolutionary studies in biology helps new insights to get major diseases. it also enables an integrated understanding of human biology and medicin…

, Chapter: 10 -Problem: 7 >> Explain how each of the following produces phenotypic ratios other than those Mendel observed: incomplete dominance, codominance, pleiotropy, epistasis.
Answer Preview: The answer to the given question has been solved as under; Incomplete dominance : An allele is dominant if it has the same phenotypic effect in heterozygotes as in homozygotes, that is the genotypes o…

, Chapter: 17 -Problem: 4 >> If you were developing a new “broad-spectrum” antibiotic to kill a wide variety of bacteria, which cell structures and pathways would you target? Which of those targets also occur in eukaryotic cells, and why is that important? How would your strategy change if you were designing a new “narrow-spectrum” antibiotic active against only a few types of bacteria?
Answer Preview: If I was developing a new "broad-spectrum" antibiotic to kill a wide variety of bacteria I would t…

, Chapter: 8 -Problem: 7 >> If you draw on your skin with a permanent marker, the markings will fade in a couple of days. What does this simple demonstration reveal about cell division in your skin? What can you infer about tattoos?
Answer Preview: Absorption of marker ink into the bloodstream occurs, enter the body through broken skin. The ch…

, Chapter: 16 -Problem: 1 >> Refer to figure 16.12 and the chapter content to answer the following questions.1. Review the Survey the Landscape figure in the chapter introduction to recall what types of organisms viruses infect. Then, add bacteriophages, animal viruses, and plant viruses to the Pull It Together concept map.2. How is a virus similar to and different from a bacterium, a viroid, and a prion?3. Add host range, la
Answer Preview: 1Introduction - viruses are small particao or microscopic partical that can infect the organism .. o…

, Chapter: 18 -Problem: 7 >> Natural selection favors stalk formation in cellular slime molds even though the cells of the stalk die. Explain this observation.
Answer Preview: As the pre-stalk cell differentiate, they forms vacuoles and enl…

, Chapter: 20 -Problem: 7 >> Review figure 19.5, which shows the alternation of generations in plants. Compare and contrast the life cycles of zygomycetes, ascomycetes, and basidiomycetes with the basic plant life cycle. Figure 19.5 Transcribed Image Text: Diploid (2n) Haploid (n) MITOSIS Mature sporophyte (2n) Zygote (2n) FERT
Answer Preview: answer 1) The alternation of generation is the type of life cycle of an organism that possess haploid sexual and diploid asexual stages. the figure is …

, Chapter: 19 -Problem: 6 >> A fern plant can produce as many as 50 million spores a year.(a) How are these spores similar to and different from seeds?(b) In a fern population that is neither shrinking nor growing, approximately what proportion of these spores is likely to survive long enough to reproduce?(c) What factors might determine whether an individual spore successfully produces a new fern plant?
Answer Preview: (a) Seeds and spores are both reproductive organs in the plant kingdom. While they both serve the sa…

, Chapter: 10 -Problem: 4 >> How did Mendel use evidence from monohybrid and dihybrid crosses to deduce his laws of segregation and independent assortment? How do these laws relate to meiosis?
Answer Preview: Mendel use evidence to deduce his laws of independent assortment and segregation from monohybrid cro…

, Chapter: 11 -Problem: 5 >> Why are entire genomes not used for DNA profiling?
Answer Preview: DNA profiling is a method which helps to determine the …

, Chapter: 28 -Problem: 11 >> In healthy adults, the concentration of glucose in blood is approximately 80 to 110 milligrams per deciliter (mg/dl). After a carbohydrate-rich meal, however, the concentration may spike to 140 mg/dl. Describe the hormonal action that returns blood glucose to normal.
Answer Preview: When the healthy adult intake the rich carbohydrate meal …

, Chapter: 37 -Problem: 8 >> Define the following terms: per capita rate of increase, environmental resistance, and carrying capacity.
Answer Preview: Definition of following terms: Per capita rate of increase Environmental resistance Carrying capacit…

, Chapter: 35 -Problem: 23 >> What kinds of studies and information would be necessary to determine whether exposure to a potential teratogen can cause birth defects a year later? How would such an analysis differ if it were a man or a woman who was exposed?
Answer Preview: Fungi is more closely to animal than plants. Fungi is related to both plants …

, Chapter: 35 -Problem: 6 >> How are the timetables different for oogenesis and spermatogenesis in humans?
Answer Preview: In spermatogenesis, sperms release out from the testis wher…

, Chapter: 36 -Problem: 7 >> European cuckoos and American cowbirds are “brood parasites” that lay their eggs in the nests of other birds. The chicks are generally raised by “adoptive parents” whose own chicks receive less food and often are killed by the larger intruders. What kinds of behaviors does natural selection favor in the cuckoo and cowbird chicks? In the adoptive parents?
Answer Preview: The European cuckoos and American cowbirds are 'brood parasites'.Natural selection favors in the c…

, Chapter: 35 -Problem: 8 >> Point mutations usually occur during interphase of mitosis, but most chromosomal abnormalities arise during meiosis. Given the differences between gamete production in males and females, why is it reasonable to predict that more point mutations occur during sperm production and more chromosomal abnormalities appear in egg cells?
Answer Preview: Major difference between male and female gametogenesis is that male …

, Chapter: 40 -Problem: 7 >> Use the Internet to research ways to make homes more energy efficient. How does reducing your monthly energy bill relate to the conservation of biodiversity?
Answer Preview: Step 1: Because this question requires examples, the answers vary. The main sources of energy consum…

, Chapter: 35 -Problem: 16 >> What is the source of nutrients for a developing preembryo? For an embryo? For a fetus?
Answer Preview: For preembryo=Focus on getting omega-3 fatty acids, found in fish (lo…

, Chapter: 28 -Problem: 8 >> Which hormone(s) match each of the following descriptions?a. Produced by a woman who is breast feedingb. Causes fatigue if too little is presentc. Causes a decrease in blood glucose level
Answer Preview: 1) The hormone produced by woman who is breastfeeding is calle…

, Chapter: 35 -Problem: 17 >> Provide a general explanation for why men have nipples. Figure 35.17 may help. Figure 35.17 Transcribed Image Text: Week 6 Undifferentiated stage Glans Genital tubercle Urogenital folds Labioscrotal folds Urogenital fold Labioscrotal fold SRY activated (week 7) SRY not present (or inactive) Week 9 M
Answer Preview: With the help of Figure 35 17 I gave this explanation In initial weeks of embryonic development …

, Chapter: 37 -Problem: 1 >> List some of the ways you have interacted with your surroundings today. Categorize each item on your list as a population-, community-, or ecosystem-level interaction.
Answer Preview: Population level interaction:- interacti…

, Chapter: 28 -Problem: 7 >> Some professional baseball players use human growth hormone (a banned substance) to aid in fast recovery after difficult workouts. How would GH help speed a player’s recovery? Is GH use the same as anabolic steroid use?
Answer Preview: HGH helps to maintain, build and repair healthy tissue in the …

, Chapter: 38 -Problem: 6 >> Search the Internet for “ecosystem services.” What does the term mean? List some examples of ecosystem services and reflect on what services might be most important to you.
Answer Preview: Ecosystem services-definition It refers to any benefit that human population derive fr…

, Chapter: 39 -Problem: 10 >> Use the clues provided to determine which biome houses each of the following four fish. Yellowfin tuna swim in deep salt water; young sea bass occupy areas where fresh and salt water mix; brook trout require clear, cool, oxygen-rich fresh water; and catfish prefer warm, quiet fresh water with a slow current.
Answer Preview: Yellowfin tuna ( Thunnus albacares) Found in the marine biome It is a tropical Tuna Found in surface …

, Chapter: 28 -Problem: 9 >> Why can a stressful lifestyle lead to heart attacks? Which hormone is released in response to long-term stress?
Answer Preview: Stress is a major risk factor for heart attacks. The likelihood of stress will result in the consequ…

, Chapter: 35 -Problem: 18 >> Consult a website that describes and illustrates fetal development. What technology do you think would be necessary to enable a fetus born in the fourth month to survive in a laboratory setting?
Answer Preview: I would suggest going through …

, Chapter: 39 -Problem: 9 >> Nuisance aquatic plants such as hydrilla can disrupt the ecology of the littoral zone of a lake. Two of the most common ways to control nuisance aquatic plants are herbicides (chemicals that kill plants) and biological control (introducing fungi or animals that consume the plants). How might each strategy help or harm the lake ecosystem?
Answer Preview: Two common ways to control nuisance aquatic plants are herbicides and biological control. Both methods have advantages and harmful effects on the lake …

, Chapter: 35 -Problem: 15 >> For each of the following pairs of phrases, indicate if the first is greater than the second, if the second is greater than the first, or if the two are equal.a. The number of cells in a morula; the number of cells in a gastrulab. The thickness of the endometrium after ovulation; the thickness of the endometrium after menstruationc. The number of eggs released from an ovary during each ovarian cyc
Answer Preview: a- number of cells in gastrula is much more than morula as gastrula has undergone more clevage. b- t…

, Chapter: 36 -Problem: 5 >> Niko Tinbergen investigated how female digger wasps find their nests. After a wasp emerged, Tinbergen moved the pine cones surrounding the nest to a nearby location. Upon its return, the wasp flew to the pine cones, not the nest. Briefly describe the system that the wasp used to find its nest.
Answer Preview: Nikkolas (Niko) Tinbergen contributed to the growth of the field of ethology, a branch of zoology (born April 15, 1907, The Hague, Netherlands died December 21, 1988, Oxford, England) (Burkhardt 2005 …

, Chapter: 35 -Problem: 19 >> During labor, a baby may remain in the birth canal for hours. How does the baby not suffocate during this time?
Answer Preview: During labor a baby may remain in the birth Canal for h…

, Chapter: 40 -Problem: 14 >> Phytoremediation is the use of plants to treat environmental problems. Search the Internet for applications of phytoremediation. What are the benefits of phytoremediation? If you were trying to discover plants suitable for use in phytoremediation, what qualities would you look for? Can you foresee any problems with phytoremediation?
Answer Preview: Phytoremediation can be defined as the process of using plants to clean soil and ground water contaminted with chemicals. It is a bioremediation proce…

, Chapter: 39 -Problem: 3 >> Tropical rain forests have nutrient-poor soils, and people who clear the forests for farming often abandon the land after a few years. However, the same soil previously supported diverse, abundant rain forest life. Explain this paradox.
Answer Preview: Yes, soil of tropical rain forest is nutrient poor because high humidity and …

, Chapter: 39 -Problem: 7 >> Polar bears live on the ice cap near the North Pole. Their numbers are dwindling, apparently because of both pollution and global climate change. List some specific ways that the melting of the Arctic ice cap might affect polar bear populations.
Answer Preview: The Effect of Climate Change on Polar Bear Population in the Arctic The rising effect of climate change in the world has raised significant concern ov…

, Chapter: 35 -Problem: 2 >> Some newborn mammals can walk and carry out other life functions independently. Human babies, on the other hand, are born helpless. Speculate about the trade-offs in these two reproductive strategies. What selective forces might limit the stage of development at which humans are born?
Answer Preview: In case of new born in other species except humans. They survive very well in any ecological condit…

, Chapter: 39 -Problem: 6 >> Why might it be unlikely for a rain forest plant in central Africa to have descendants that colonize the nearby savanna?
Answer Preview: ONE CAN EASILY DISTINGUISH BETWEEN RGM FOREST AND SAVANNA REGION THESE ARE THE REASON…

, Chapter: 33 -Problem: 7 >> How does the kidney reduce the volume of urine to a small fraction of the volume of filtrate that enters the glomerular capsule?
Answer Preview: Usually urine flows from glomerular capsule Proximal convoluted tubule Loop of Henle distal convolut…

, Chapter: 38 -Problem: 11 >> Imagine that you could follow a single water molecule, carbon atom, nitrogen atom, and phosphorus atom from one animal into two abiotic reservoirs. Which atom or molecule is most likely to remain near the animal? Explain your answer.
Answer Preview: water molecule, carbon atom, nitrogen atom, and phosphorus atom all are the essential component …

, Chapter: 27 -Problem: 11 >> In a rare condition called synesthesia, stimulation of one sense causes stimulation of another sense. For example, people with synesthesia have reported seeing bursts of color when stimulated with loud noises. Would you expect synesthesia to be a problem with sensory receptors, peripheral nerves, or the central nervous system? Explain.
Answer Preview: Synesthesia is a neurological condition in which information meant to stimulate one of your senses stimulates several of your senses. People who have …

, Chapter: 38 -Problem: 12 >> Suppose a friend says, “I hate germs! I wish we could kill all bacteria!” What would happen if your friend didn’t have bacteria in her body? What would happen to nutrient cycles without bacteria?
Answer Preview: Bacteria is a very primitive life form, but interestingly it has got many specific features for whic…

, Chapter: 31 -Problem: 7 >> A person can choke if a hard candy or other small object obstructs the airway. In drowning, a person’s lungs fill with water. Explain how each of these events can cause death. In most circumstances, how does the body react to prevent either of these disasters from occurring?
Answer Preview: when a person choked a hard candy or else his lungs are filled with water while d…

, Chapter: 37 -Problem: 4 >> Why might an ecologist be interested in studying population dynamics?
Answer Preview: Population ecologists study population within ecosys…

, Chapter: 33 -Problem: 6 >> Shortly after you drink a large glass of water, you will feel the urge to urinate. Explain this observation. Begin by tracing the path of the water, starting at the glomerulus and ending with the arrival of urine in the bladder.
Answer Preview: Most people urinate 7 to 9 times a day after drinking 2 to 3 liters a day . Urinating more than this may be called as urinary frequency. Stress, UTI( …

, Chapter: 36 -Problem: 3 >> What do nonthreatening odors, repetitive sounds, and constant touch have in common?
Answer Preview: What do nonthreatening odors, repetitive sounds, and constant touch have in common? Neural adaptation and Habituation Neural adaptation or sensory ada…

, Chapter: 34 -Problem: 10 >> Compare and contrast how a bacterial population becomes resistant to antibiotics and how a person becomes immune to infections by a particular species of bacteria.
Answer Preview: A bacterial population becomes resistant to antibiotics when the bacteria eliminates or reduces the …

, Chapter: 38 -Problem: 2 >> Researcher G. F. Gause tested how two species of paramecia (one-celled protists) responded to food availability. When grown in separate dishes, each population’s size was proportional to the amount of food (the more food, the larger the population). However, when both were grown in the same dish, only one species survived. What conclusions about competition can you draw from these two results?
Answer Preview: Gause did an experiment with 2 different species of Paramecium namely P aura…

, Chapter: 34 -Problem: 8 >> Briefly explain the function of each innate and adaptive defense listed in figure 34.17. Figure 34.17 Transcribed Image Text: Time after Infection Innate responses 12 Inflammation Adaptive responses Antigen-presenting macrophage binds to helper T cell Once a

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