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Chapter: 14 -Problem: 1 >> At what stage does the diploid zygote form?a. When the female cone begins to bud from the treeb. When the sperm nucleus and the egg nucleus fusec. When the seeds drop from the tree Data in Figure 14.19 Transcribed Image Text: Sporophyte (2n) (mature tree) Seeds (2n) 1 Seeds are dispersed and grow in
Answer Preview: Fertilization is the process in …

, Chapter: 11 -Problem: 9 >> The fact that DNA sequences are more similar in more closely related organisms is evidence of what?a. Optimal design in organismsb. Adaptationc. Mutationd. Descent with modification
Answer Preview: So when you analyze DNA and see the …

, Chapter: 16 -Problem: 17 >> Most of the hormones produced by the anterior pituitary perform what function?a. Regulate growthb. Regulate the sleep cyclec. Regulate production of other hormonesd. Regulate blood volume and blood pressure
Answer Preview: One of the two lobes that make up your pi…

, Chapter: 11 -Problem: 3 >> Which of the following situations will lead to natural selection?a. The seeds of two plants land near each other and one grows larger than the other.b. Two types of fish eat the same kind of food, and one is better able to gather food than the other.c. Male lions compete for the right to mate with females, with only one possible winner.d. All of the above
Answer Preview: The options were given the seeds of two plants that is the land plant near each other and one grow…

, Chapter: 8 -Problem: 7 >> A recessive trait will be observed in individuals that are ________ for that trait.a. Heterozygousb. Homozygous or heterozygousc. Homozygousd. Diploid
Answer Preview: Homozygous A recessive trait wil…

, Chapter: 15 -Problem: 19 >> Which of the following is a Monotreme?a. Kangaroob. Koalac. Bandicootd. Platypus
Answer Preview: a. Kangaroo The kangaroo is a marsupial native to Australia. Marsupials are mammals …

, Chapter: 2 -Problem: 15 >> Explain at least three functions that lipids serve in plants and/or animals.
Answer Preview: Lipids serve a variety of purposes in the plants , serving as signali…

, Chapter: 17 -Problem: 11 >> The fact that the body does not normally mount an immune response to the molecules in food is an example of _______.a. Secondary immune responseb. Immunological memoryc. Immune toleranced. Passive immunity
Answer Preview: c. Immune tolerance The body does not normally moun…

, Chapter: 21 -Problem: 6 >> Which two extinction risks may be a direct result of the pet trade?a. Climate change and exotic species introductionb. Habitat loss and overharvestingc. Overharvesting and exotic species introductiond. Habitat loss and climate change
Answer Preview: Answer: C, D The passenger pigeon, a species of large flightless bird in the pigeon family, is an ex…

, Chapter: 16 -Problem: 41 >> What are the main differences between the sympathetic and parasympathetic branches of the autonomic nervous system?
Answer Preview: The sympathetic and parasympathetic branches of the autonomic nervous system are opposites. Th…

, Chapter: 9 -Problem: 4 >> DNA replicates by which of the following models?a. Conservativeb. Semiconservativec. Dispersived. None of the above
Answer Preview: Ans - b, Semiconservative DNA replicates by semi-con…

, Chapter: 15 -Problem: 28 >> During embryonic development, what features do we share with tunicates or lancelets?
Answer Preview: During embryonic development, we share similar features wit…

, Chapter: 9 -Problem: 3 >> Prokaryotes contain a ________chromosome, and eukaryotes contain ________ chromosomes.a. Single-stranded circular; single-stranded linearb. Single-stranded linear; single-stranded circularc. Double-stranded circular; double-stranded lineard. Double-stranded linear; double-stranded circular
Answer Preview: c. Double-stranded circular; double-stranded linear The dif…

, Chapter: 15 -Problem: 29 >> What can be inferred about the evolution of the cranium and the vertebral column from examining hagfishes and lampreys?
Answer Preview: Comparison of hagfishes with lam…

, Chapter: 16 -Problem: 39 >> How are neurons similar to other cells? How are they unique?
Answer Preview: Neurons are the most complex cells in the body and have many different functions. They provide signals throughout the brain, interpret external stimuli, and process information internally. Neurons use a network of electrical signals to transmit messagesthey are often called an electrochemical signaling system because they occur mainly through ions flowing across a membrane. The main role of neurons is to carry out these functions …

, Chapter: 18 -Problem: 7 >> Which of the following gives rise to the skin cells?a. Ectodermb. Endodermc. Mesodermd. None of the above
Answer Preview: ectoderm The three germ layers are the endoderm, …

, Chapter: 16 -Problem: 10 >> The bile from the liver is delivered to the ________.a. Stomachb. Liverc. Small intestined. Colon
Answer Preview: Your liver makes a digestive juice cal…

, Chapter: 16 -Problem: 22 >> Which component is responsible for initially stimulating a muscle contraction?a. Proteinsb. Electrochemical signalsc. Plasma membranesd. Striations
Answer Preview: Muscle contraction can be defined as the increase in t…

, Chapter: 16 -Problem: 2 >> Which of the following statements about the digestive system is false?a. Chyme is a mixture of food and digestive juices that is produced in the stomach.b. Food enters the large intestine before the small intestine.c. In the small intestine, chyme mixes with bile, which emulsifies fats.d. The stomach is separated from the small intestine by the pyloric sphincter. Data in Figure 16.7 
Answer Preview: Food first enters the small intestine where it is …

, Chapter: 16 -Problem: 36 >> Describe how hormone receptors can play a role in affecting the size of the responses of tissues to hormones.
Answer Preview: Hormones are chemicals that are secreted by glands in one part of the body, and which affect cells e…

, Chapter: 16 -Problem: 1 >> When bacteria are destroyed by leukocytes, pyrogens are released into the blood. Pyrogens reset the body’s thermostat to a higher temperature, resulting in fever. How might pyrogens cause the body temperature to rise? Data in Figure 16.2  Transcribed Image Text: Body temperature falls. Blood vessels
Answer Preview: When a bacterium is destroyed by phagocytic leukocytes, …

, Chapter: 17 -Problem: 20 >> How do B and T cells differ with respect to antigens that they bind?
Answer Preview: B cells mature into plasma cells, which produce antibodies against all …

, Chapter: 15 -Problem: 22 >> Describe the feeding mechanism of sponges and identify how it is different from other animals.
Answer Preview: The sponges draw water carrying food particle…

, Chapter: 16 -Problem: 11 >> Which of the following statements is not true?a. Essential nutrients can be synthesized by the body.b. Vitamins are required in small quantities for bodily function.c. Some amino acids can be synthesized by the body, while others need to be obtained from diet.d. Vitamins come in two categories: fat-soluble and water-soluble.
Answer Preview: c. Some amino acids can be synthesized by the body, while oth…

, Chapter: 15 -Problem: 27 >> Sessile adult tunicates lose the notochord; what does this suggest about one function of this structure?
Answer Preview: Sessile adult tunicates lose the notoc…

, Chapter: 16 -Problem: 42 >> What are the main functions of the sensory-somatic nervous system?
Answer Preview: The sensory-somatic nervous system is part of the peripheral ner…

, Chapter: 16 -Problem: 9 >> Where does the majority of fat digestion take place?a. Mouthb. Stomachc. Small intestined. Large intestine
Answer Preview: Small intestine Small intestine The majority of fat digestion ha…

, Chapter: 17 -Problem: 5 >> The viral ________ plays a role in attaching a virion to the host cell.a. Coreb. Capsidc. Enveloped. Both b and c
Answer Preview: Step 1 A virus consisting a naked capsid goes into the cell by attaching to the attachment fact…

, Chapter: 17 -Problem: 22 >> Some photographers develop a sensitivity to certain film developing chemicals leading to severe rashes on their hands such that they are unable to work with them. Explain what is probably happening.
Answer Preview: Why sensitivity is developed by some photographers pertaining to chemicals used in developing film t…

, Chapter: 2 -Problem: 3 >> Which type of bond represents a weak chemical bond?a. Hydrogen bondb. Ionic bondc. Covalent bondd. Polar covalent bond
Answer Preview: a. Hydrogen bond Hydrogen bonds are re…

, Chapter: 16 -Problem: 37 >> Many hormone systems regulate body functions through opposing hormone actions. Describe how opposing hormone actions regulate blood-glucose levels?
Answer Preview: The opposing hormones that regulate blood-glucose levels are insulin and glucagon. …

, Chapter: 19 -Problem: 7 >> Species with limited resources usually exhibit a(n) ________ growth curve.a. Logisticb. Logicalc. Experimentald. Exponential
Answer Preview: b. Logical A logical growth curve is one in which resources are limited, and the pop…

, Chapter: 15 -Problem: 18 >> Sudoriferous glands produce ________.a. Sweatb. Lipidsc. Sebumd. Milk
Answer Preview: Answer A all right. Time to this question. You gotta look in the section about mammals. And when …

, Chapter: 20 -Problem: 13 >> Compare grazing and detrital food webs. Why would they both be present in the same ecosystem?
Answer Preview: Grazing and detrital food webs are both present in the same ecosyste…

, Chapter: 15 -Problem: 10 >> Crustaceans are _____.a. Ecdysozoansb. Nematodesc. Arachnidsd. Parazoans
Answer Preview: All right, This questions asking about crustaceans. So crustaceans are in the Let me do this in blac…

, Chapter: 20 -Problem: 4 >> The producer in an ocean grazing food web is usually a ________.a. Plantb. Animalc. Fungid. Plankton
Answer Preview: Step 1 Ecology is the study of interaction of organisms with on…

, Chapter: 16 -Problem: 13 >> Which is the order of airflow during inhalation?a. Nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli b. Nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli c. Nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli d. Nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli
Answer Preview: (d) Nostrils pharynx larynx trachea alveoli Explanation The respiratory route of ai…

, Chapter: 9 -Problem: 11 >> Post-translational control refers to:a. Regulation of gene expression after transcriptionb. Regulation of gene expression after translationc. Control of epigenetic activationd. Period between transcription and translation
Answer Preview: Answer is option b. - Regulation of gene expression after translation. Post-translational control oc…

, Chapter: 16 -Problem: 25 >> The part of the brain that is responsible for coordination during movement is the ______.a. Limbic systemb. Thalamusc. Cerebellumd. Parietal lobe
Answer Preview: The cerebellum also called the "little brain" be…

, Chapter: 3 -Problem: 4 >> When viewing a specimen through a light microscope, scientists use _________ to distinguish the individual components of cells.a. A beam of electronsb. Radioactive isotopesc. Special stainsd. High temperatures
Answer Preview: c. Special stains Special st…

, Chapter: 16 -Problem: 40 >> What are the main functions of the spinal cord?
Answer Preview: The spinal cord is the part of the central nervous …

, Chapter: 20 -Problem: 5 >> Which term describes the process whereby toxic substances increase along trophic levels of an ecosystem?a. Biomassificationb. Biomagnificationc. Bioentropyd. Heterotrophy
Answer Preview: Answer B this question is asking us how we would describe Theobald, city of a toxic substance, to increase in concentration as you move up trophic lev…

, Chapter: 18 -Problem: 10 >> Which hormone causes FSH and LH to be released?a. Testosteroneb. Estrogenc. GnRHd. Progesterone
Answer Preview: The pituitary gland in your endocrine system uses gon…

, Chapter: 20 -Problem: 16 >> In what ways are the subtropical desert and the Arctic tundra similar?
Answer Preview: The two environments have many similariti…

, Chapter: 17 -Problem: 14 >> A potential cause of acquired autoimmunity is ________.a. Tissue hypersensitivityb. Molecular mimicryc. Histamine released. Radiation exposure
Answer Preview: b. Molecular mimicry : Molecular mimicry is a phenom…

, Chapter: 21 -Problem: 9 >> What is the name of the first international agreement on climate change?a. Red Listb. Montreal Protocolc. International Union for the Conservation of Nature (IUCN)d. Kyoto Protocol
Answer Preview: The correct answer -(D) Kyoto protocol Explanation Red list is a data of species which are th…

, Chapter: 16 -Problem: 19 >> Which endocrine glands are associated with the kidneys?a. Thyroid glandsb. Pituitary glandsc. Adrenal glandsd. Gonads
Answer Preview: The adrenal glands are associated with the kidneys…

, Chapter: 2 -Problem: 2 >> Magnesium has an atomic number of 12. Which of the following statements is true of a neutral magnesium atom?a. It has 12 protons, 12 electrons, and 12 neutrons.b. It has 12 protons, 12 electrons, and six neutrons.c. It has six protons, six electrons, and no neutrons.d. It has six protons, six electrons, and six neutrons.
Answer Preview: All atoms contain electrons, protons and neutrons. Protons are positively charged particles whi…

, Chapter: 16 -Problem: 16 >> How do arteries differ from veins? a. Arteries have thicker wall layers to accommodate the changes in pressure from the heart.b. Arteries carry blood.c. Arteries have thinner wall layers and valves and move blood by the action of skeletal muscle.d. Arteries are thin walled and are used for gas exchange.
Answer Preview: Arteries carry blood away from the heart, and veins carry bloo…

, Chapter: 9 -Problem: 10 >> Control of gene expression in eukaryotic cells occurs at which level(s)?a. Only the transcriptional levelb. Epigenetic and transcriptional levelsc. Epigenetic, transcriptional, and translational levelsd. Epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels
Answer Preview: The right answer to this question is "Contr…

, Chapter: 17 -Problem: 17 >> Why is immunization after being bitten by a rabid animal so effective?
Answer Preview: The immunization after being bitten by a rabid animal, like getting rabies vaccina…

, Chapter: 19 -Problem: 19 >> Describe the growth at various parts of the S-shaped curve of logistic growth.
Answer Preview: Logistics growth curve In logistic growth, a population's per ca…

, Chapter: 16 -Problem: 27 >> Describe how the body’s mechanisms maintain homeostasis?
Answer Preview: Individuals maintain homeostasis through the autonomic nervous syste…

, Chapter: 2 -Problem: 9 >> Cellulose and starch are examples of ________.a. Monosaccharidesb. Disaccharidesc. Lipidsd. Polysaccharides
Answer Preview: Step 1 > Summary Introduction Introduction: Carbohydrates are the groups of organic compounds that a…

, Chapter: 17 -Problem: 8 >> Although interferons have several effects, they are particularly useful against infections with which type of pathogen?a. Bacteriab. Virusesc. Fungid. Helminths
Answer Preview: Correct answer-(b) Virus Explanation Interferons are signaling proteins which are released by the h…

, Chapter: 9 -Problem: 14 >> How do the linear chromosomes in eukaryotes ensure that its ends are replicated completely?
Answer Preview: The linear chromosomes in eukaryotes ensure t…

, Chapter: 18 -Problem: 8 >> Sperm are produced in the ________.a. Scrotumb. Seminal vesiclesc. Seminiferous tubulesd. Prostate gland
Answer Preview: The testes are where sperm are manufactured in the scrotum. The …

, Chapter: 20 -Problem: 9 >> Which of the following biomes is characterized by short growing seasons?a. Desertsb. Tropical wet forestsc. Arctic tundrad. Savanna
Answer Preview: the arctic tundra Answer and Explanation: The biome tha…

, Chapter: 15 -Problem: 24 >> Speculate as to what advantage(s) a complete digestive system has over an incomplete digestive system?
Answer Preview: Complete digestive systems are better able to …

, Chapter: 2 -Problem: 1 >> How many neutrons do (K) potassium-39 and potassium-40 have, respectively? Data in Figure 2.3 Transcribed Image Text: 1 2 4 Group 1 6 H 1.01 Hydog 11 3 Na 22.99 Sod 7 L 19 Li 6.94 Po 37 5 Rb K 39.09 115.47 Hibur 55 Cs 132.9 Ce 87 2 Be 9.01 Beyn Name 12 Mg 24.31 Magnesam 20 Atomic. Number Ca 40,00 Ca
Answer Preview: Potassium-39 has 19 neutrons, while potassium-40 has 20 neu…

, Chapter: 16 -Problem: 32 >> Describe the function of these terms and describe where they are located: main bronchus, trachea, alveoli.
Answer Preview: The trachea is the cartilaginous structure that extends …

, Chapter: 21 -Problem: 2 >> The number of currently described species on the planet is about ________.a. 17,000b. 150,000c. 1.5 million d. 10 milliond. 10 million
Answer Preview: Biodiversity is diversity of various living organisms on the …

, Chapter: 18 -Problem: 12 >> Which hormone is primarily responsible for the contractions during labor?a. Oxytocinb. Estrogenc. ?-HCGd. Progesterone
Answer Preview: Option "A" is the correct an…

, Chapter: 7 -Problem: 1 >> If a mutation occurs so that a fungus is no longer able to produce a minus mating type, will it still be able to reproduce? Data in Figure 7.2  Transcribed Image Text: (0) (b) Diploid 2n FERTILIZATION Haploid In Diploid 2n NUCLEAR FUSION Haploid In SEXUAL Diploid-Dominant Life Cycle in Animals CELL
Answer Preview: Yes, a fungus that is unable to produce min…

, Chapter: 15 -Problem: 23 >> Compare the structural differences between Porifera and Cnidaria.
Answer Preview: Poriferans do not possess true tissues…

, Chapter: 2 -Problem: 16 >> Explain what happens if even one amino acid is substituted for another in a polypeptide chain. Provide a specific example.
Answer Preview: If even one amino acid is substituted for another in a polype…

, Chapter: 16 -Problem: 18 >> What is the function of the hormone erythropoietin?a. Stimulates production of red blood cellsb. Stimulates muscle growthc. Causes the fight-or-flight responsed. Causes testosterone production
Answer Preview: Answer: stimulates production of red blood cells i…

, Chapter: 9 -Problem: 6 >> A promoter is ________.a. A specific sequence of DNA nucleotidesb. A specific sequence of RNA nucleotidesc. A protein that binds to DNAd. An enzyme that synthesizes RNA
Answer Preview: OPTION (A) IS CORRECT ANSWER Transcription is a process where the tem…

, Chapter: 17 -Problem: 21 >> Why is the immune response after reinfection much faster than the adaptive immune response after the initial infection?
Answer Preview: The immune response after reinfection is much faster because after the initi…

, Chapter: 21 -Problem: 7 >> What kind of ecosystem are exotic species especially threatening to?a. Desertsb. Marine ecosystemsc. Islandsd. Tropical forests
Answer Preview: Answer and Explanation: The kinds of ecosystems …

, Chapter: 18 -Problem: 6 >> The process of gastrulation forms the _______.a. Blastulab. Zygotec. Organsd. Germ layers
Answer Preview: d. Germ layers The process of gastrulation …

, Chapter: 3 -Problem: 8 >> Which of the following is found both in eukaryotic and prokaryotic cells?a. Nucleusb. Mitochondrionc. Vacuoled. Ribosome
Answer Preview: Solution The correct option is A Ribosomes Prokaryotic cells lack true nucleus as well as me…

, Chapter: 19 -Problem: 5 >> Which of the following is best at showing the life expectancy of an individual within a population?a. Quadratb. Mark and recapturec. Survivorship curved. Life table
Answer Preview: c. Survivorship curve. . The survivorship curve shows how long a populat…

, Chapter: 21 -Problem: 3 >> A secondary plant compound might be used for which of the following?a. A new crop varietyb. A new drugc. A soil nutrientd. A crop pest
Answer Preview: Plant chemicals that do not directly affect plant metabolism are referred to as secondary compounds. …

, Chapter: 17 -Problem: 3 >> The Rh antigen is found on Rh-positive red blood cells. An Rh-negative female can usually carry an Rh-positive fetus to term without difficulty. However, if she has a second Rh-positive fetus, her body may launch an immune attack that causes hemolytic disease of the newborn. Why do you think hemolytic disease is only a problem during the second or subsequent pregnancies? Data in Figure 17.17
Answer Preview: The reason that hemolytic disease of the newborn is only a problem d…

, Chapter: 20 -Problem: 7 >> The process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called ________.a. Dead zoningb. Eutrophicationc. Retrophicationd. Depletion
Answer Preview: Answer: c ------------------------------------------------------------------------------------------------------- …

, Chapter: 17 -Problem: 4 >> Which statement is true?a. A virion contains DNA and RNA.b. Viruses are acellular.c. Viruses replicate outside of the cell.d. Most viruses are easily visualized with a light microscope.
Answer Preview: option B is correct answer Explanation Viruses are acellular in nature. Viruses are RNA or DNA e…

, Chapter: 1 -Problem: 6 >> The type of logical thinking that uses related observations to arrive at a general conclusion is called ________.a. Deductive reasoningb. The scientific methodc. Hypothesis-based scienced. Inductive reasoning
Answer Preview: Inductive reasoning is a form of l…

, Chapter: 16 -Problem: 12 >> The respiratory system ________.a. Provides body tissues with oxygenb. Provides body tissues with oxygen and carbon dioxidec. Establishes how many breaths are taken per minuted. Provides the body with carbon dioxide
Answer Preview: The link up of body organs and tissues to facilitate breathing makes up what is known as the respiratory system .in order for the body organs to funct…

, Chapter: 19 -Problem: 10 >> Species that have many offspring at one time are usually:a. R-selectedb. K-selectedc. Both r- and K-selectedd. Not selected
Answer Preview: B. K-selected In order to produce more progeny, r-s…

, Chapter: 16 -Problem: 35 >> What is a similarity and a difference between an exocrine gland and an endocrine gland?
Answer Preview: Exocrine glands secrete their products into the external environment. Endocri…

, Chapter: 19 -Problem: 17 >> When an invasive species alters the community structure it is introduced to, what can the consequence be?a. Extinction of economically important speciesb. Reduced predation on some native speciesc. Increased predation on some native speciesd. All of the above
Answer Preview: Taxonomy is the science of classification of organis…

, Chapter: 16 -Problem: 28 >> Why is excretion important in order to achieve osmotic balance?
Answer Preview: It is important to excrete excess water in order to achieve osmotic bal…

, Chapter: 20 -Problem: 3 >> Decomposers are associated with which class of food web?a. Grazingb. Detritalc. Invertedd. Aquatic
Answer Preview: A food web is a group of organisms arranged according to their preferred food sources. Pro…

, Chapter: 16 -Problem: 29 >> What is the role of the accessory organs in digestion?
Answer Preview: Accessory organs in digestion, such as the liver, gallbladder, and pancreas, serve to break d…

, Chapter: 20 -Problem: 8 >> Which of the following biomes is characterized by abundant water resources?a. Desertsb. Boreal forestsc. Savannad. Tropical wet forests
Answer Preview: There's boreal forests, there's the arctic tundr…

, Chapter: 15 -Problem: 11 >> A mantle and mantle cavity are present in _____.a. Class Oligochaetab. Class Bivalviac. Class Polychaetad. Class Hirudinea
Answer Preview: Answer: The correct answer is class bivalvia. Explanat…

, Chapter: 2 -Problem: 8 >> An example of a monosaccharide is ________.a. Fructoseb. Glucosec. Galactosed. All of the above
Answer Preview: Answer: All of the above. Explanation: Monosaccharide may be defined as the sugar…

, Chapter: 15 -Problem: 26 >> Describe the morphology and anatomy of mollusks.
Answer Preview: Mollusks have a hard outer shell. There is a layer of tiss…

, Chapter: 21 -Problem: 1 >> The Svalbard seed vault is located on Spitsbergen island in Norway, which has an arctic climate. Why might an arctic climate be good for seed storage?  Data in Figure 21.6
Answer Preview: In the Arctic region, where the temperature is normally ver…

, Chapter: 18 -Problem: 11 >> Nutrient and waste requirements for the developing fetus are handled during the first few weeks by ________.a. The placentab. Diffusion through the endometriumc. The choriond. The blastocyst
Answer Preview: The placenta is a temporary embryonic organ that connects the fetus and uterus walls during pregnanc…

, Chapter: 2 -Problem: 11 >> The monomers that make up proteins are called _________.a. Nucleotidesb. Disaccharidesc. Amino acidsd. Chaperones
Answer Preview: Amino acids are the monomers that make up pr…

, Chapter: 16 -Problem: 3 >> Which of the following statements about the human respiratory system is false?a. When we breathe in, air travels from the pharynx to the trachea.b. The bronchioles branch into bronchi.c. Alveolar ducts connect to alveolar sacs.d. Gas exchange between the lungs and blood takes place in the alveolus.   Data in Figure 16.9  T
Answer Preview: The primary airways (bronchi) of th…

, Chapter: 2 -Problem: 13 >> Why can some insects walk on water?
Answer Preview: The true answer lies with the legs on t…

, Chapter: 16 -Problem: 14 >> Where does the right ventricle send blood?a. The headb. The upper bodyc. The lungsd. The lower body
Answer Preview: Answer and Explanation: The right ventricle sends blood to the …

, Chapter: 3 -Problem: 14 >> Active transport must function continuously because __________.a. Plasma membranes wear outb. Cells must be in constant motionc. Facilitated transport opposes active transportd. Diffusion is constantly moving the solutes in the other direction
Answer Preview: Answer: Option D. Explanation: Active transport is defined as the …

, Chapter: 15 -Problem: 21 >> Using the following terms, explain what classifications and groups humans fall into, from the most general to the most specific: symmetry, germ layers, coelom, embryological development.
Answer Preview: The question we have over here is what classification and group human falls into from the most g…

, Chapter: 19 -Problem: 9 >> The population size of a species capable of being supported by the environment is called its ________.a. Limitb. Carrying capacityc. Biotic potentiald. Logistic growth pattern
Answer Preview: b. Carrying capacity EXPLANATION: The typical population size of a spe…

, Chapter: 18 -Problem: 14 >> Compared to separate sexes and assuming selffertilizing is not possible, what might be one advantage and one disadvantage to hermaphroditism?
Answer Preview: Compared to separate sexes and assuming self fertilizing is not possible,what might be one adva…

, Chapter: 21 -Problem: 5 >> Converting a prairie to a farm field is an example of ________.a. Overharvestingb. Habitat lossc. Exotic speciesd. Climate change
Answer Preview: Answer: c. Exotic species. Exotic species are plants, animals, or insects …

, Chapter: 15 -Problem: 12 >> Annelids have a _____.a. Pseudocoelomb. A true coelomc. No coelomd. None of the above
Answer Preview: Correct option is D) Organisms belonging to the phylum Annelida and Arthropoda have a …

, Chapter: 9 -Problem: 16 >> Describe how controlling gene expression will alter the overall protein levels in the cell.
Answer Preview: As gene expression is controlled, the overall protein levels in the ce…

, Chapter: 17 -Problem: 15 >> Autoantibodies are probably involved in ________.a. Reactions to poison ivyb. Pollen allergiesc. Systemic lupus erythematosusd. HIV/AIDS
Answer Preview: c. Systemic lupus erythematosus. Autoantibodies are a gr…

, Chapter: 21 -Problem: 15 >> Describe what happens to an ecosystem when a keystone species is removed.
Answer Preview: When one keystone species is removed from an ecosystem, everything in it can change; When a …

, Chapter: 16 -Problem: 6 >> When faced with a sudden drop in environmental temperature, an endothermic animal will ________.a. Experience a drop in its body temperatureb. Wait to see if it goes lower c. Increase muscle activity to generate heatd. Add fur or fat to increase insulation
Answer Preview: Endotherms are warm-blooded animals that maintain a constant body temperature independent of the env…

, Chapter: 21 -Problem: 10 >> Explain how biodiversity loss can impact crop diversity.
Answer Preview: Diversity is important for food-producing systems because it allows the system to adapt to chang…

, Chapter: 15 -Problem: 30 >> Explain why frogs are restricted to a moist environment.
Answer Preview: A moist environment is required as eggs lack a shell and thu…

, Chapter: 9 -Problem: 13 >> Describe the structure and complementary base pairing of DNA.
Answer Preview: The structure of DNA is a double helix as given by Watson and C…

, Chapter: 16 -Problem: 8 >> What is the cause of a fever of 38.3 °C (101 °F)?a. Too much heat produced by the bodyb. Upward adjustment of the body temperature set pointc. Inadequate cooling mechanisms in the bodyd. The heat caused by a viral or bacterial infection
Answer Preview: D. The increased body temperature (feve…

, Chapter: 2 -Problem: 4 >> An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have?a. 11b. 12c. 22d. 44
Answer Preview: Therefore, the number of neutrons can be obtai…

, Chapter: 16 -Problem: 21 >> The pectoral girdle supports the ________.a. Armsb. Legsc. Skulld. Thoracic cage
Answer Preview: The skeleton system is one of the vital systems of a bo…

, Chapter: 1 -Problem: 7 >> Using examples, explain how biology can be studied from a microscopic approach to a global approach.
Answer Preview: Researchers can approach biology from the tiniest to …

, Chapter: 19 -Problem: 4 >> Which of the following methods will provide information to an ecologist about both the size and density of a population?a. Mark and recaptureb. Mark and releasec. Quadratd. Life table
Answer Preview: Which of the following methods will provide information to an ecologist about both th…

, Chapter: 1 -Problem: 4 >> Which of the following sequences represents the hierarchy of biological organization from the most complex to the least complex level?a. Organelle, tissue, biosphere, ecosystem, populationb. Organ, organism, tissue, organelle, moleculec. Organism, community, biosphere, molecule, tissue, organd. Biosphere, ecosystem, community, population, organism
Answer Preview: Correct answer -(d) Biosphere, ecosystem, community, populati…

, Chapter: 15 -Problem: 15 >> Which of the following is not a member of the phylum Chordata?a. Cephalochordatab. Echinodermatac. Urochordatad. Vertebrata
Answer Preview: Correct option is D) Animals that belong to phylum Chordata are characterized by the presen…

, Chapter: 2 -Problem: 7 >> The pH of lemon juice is about 2.0, whereas tomato juice's pH is about 4.0. Approximately how much of an increase in hydrogen ion concentration is there between tomato juice and lemon juice?a. 2 timesb. 10 timesc. 100 timesd. 1000 times
Answer Preview: Step 1 Given values pH of lemon juice = 2 pH of tomato juice = …

, Chapter: 17 -Problem: 7 >> Which of the following is a barrier against pathogens provided by the skin?a. Low pHb. Mucusc. Tearsd. Cilia
Answer Preview: Answer a a skin, um, has a low pH goto um, the presence off the repeats like…

, Chapter: 20 -Problem: 6 >> The majority of the water found on Earth is:a. Iceb. Water vaporc. Fresh waterd. Salt water
Answer Preview: The correct answer is d. Salt water Over 96 percent of the …

, Chapter: 17 -Problem: 16 >> Why can’t dogs catch the measles?
Answer Preview: Dogs can't catch the measles …

, Chapter: 3 -Problem: 5 >> The ___________ is the basic unit of life.a. Organismb. Cellc. Tissued. Organ
Answer Preview: b. Cell is the basic unit of life. Fully formed cells are the units of life. Al…

, Chapter: 17 -Problem: 19 >> If a series of genetic mutations prevented some, but not all, of the complement proteins from binding antibodies or pathogens, would the entire complement system be compromised?
Answer Preview: If a series of genetic mutations prevented some, but not all, …

, Chapter: 20 -Problem: 1 >> Which of the following statements about the nitrogen cycle is false? a. Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+).b. Denitrification by bacteria converts nitrates (NO3-) to nitrogen gas (N2).c. Nitrification by bacteria converts nitrates (NO3-) to nitrites (NO2-).d. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds. Data i
Answer Preview: Step 1 > Summary Introduction Introduction: Nitrogen cycle is a biogeochemical cycle that involves t…

, Chapter: 17 -Problem: 18 >> Different MHC class I molecules between donor and recipient cells can lead to rejection of a transplanted organ or tissue. Suggest a reason for this.
Answer Preview: -The MHC molecules are critical for the immune system to identify and fight off foreign invaders. -A …

, Chapter: 6 -Problem: 3 >> An organism’s traits are determined by the specific combination of inherited ________.a. Cellsb. Genesc. Proteinsd. Chromatids
Answer Preview: Answer is option b. Genes Traits of an organism are contributed by genes. Genes are the unit of here…

, Chapter: 18 -Problem: 13 >> What might be a disadvantage to temperaturedependent sex determination
Answer Preview: The disadvantage of temperature-dependent sex determinati…

, Chapter: 19 -Problem: 6 >> Human populations have which type of survivorship curve?a. Type Ib. Type IIc. Type IIId. Type IV
Answer Preview: correct answer is "A" Explanation survivorship curve is used to predict how …

, Chapter: 17 -Problem: 9 >> Which innate immune system component uses MHC class I molecules directly in its defense strategy?a. Macrophagesb. Neutrophilsc. NK cellsd. Interferon
Answer Preview: c. NK cells NK cells are a type of white blood c…

, Chapter: 19 -Problem: 18 >> Describe how a researcher would determine the size of a penguin population in Antarctica using the mark and release method.
Answer Preview: The researcher would mark a certain number of pengui…

, Chapter: 16 -Problem: 15 >> During the systolic phase of the cardiac cycle, the heart is ________.a. Contractingb. Relaxingc. Contracting and relaxingd. Filling with blood
Answer Preview: diastole Each cardiac cycle has a diastolic phase (also called …

, Chapter: 19 -Problem: 20 >> Give an example of how density-dependent and density-independent factors might interact.
Answer Preview: The density-dependent factor is the a…

, Chapter: 15 -Problem: 20 >> How are specialized tissues important for animal function and complexity?
Answer Preview: The development of specialized tissues afford…

, Chapter: 21 -Problem: 13 >> Explain what extinction threats a frog living on a mountainside in Costa Rica might face.
Answer Preview: A frog living on a mountainside in Costa Rica fa…

, Chapter: 16 -Problem: 4 >> Which of the following statements about the circulatory system is false?a. Blood in the pulmonary vein is deoxygenated.b. Blood in the inferior vena cava is deoxygenated.c. Blood in the pulmonary artery is deoxygenated.d. Blood in the aorta is oxygenated. Data in Figure 16.10  Transcribed Image Text:
Answer Preview: Answer. A- blood in pulmonary vein is …

, Chapter: 9 -Problem: 5 >> The initial mechanism for repairing nucleotide errors in DNA is ________.a. Mismatch repairb. DNA polymerase proofreadingc. Nucleotide excision repaird. Thymine dimers
Answer Preview: Step 1 The biochemical molecule that is built up with two polynucleotide chains is called DNA (Deoxy…

, Chapter: 16 -Problem: 38 >> What movements occur at the hip joint and knees as you bend down to pick something up?
Answer Preview: The movements of the hip joint and knees as you bend down to pick …

, Chapter: 2 -Problem: 10 >> Phospholipids are important components of __________.a. The plasma membrane of cellsb. The ring structure of steroidsc. The waxy covering on leavesd. The double bond in hydrocarbon chains
Answer Preview: Step 1 Plasma membrane is a lipid bilayer. Alcohol, fatty acids, phosphates, and a…

, Chapter: 16 -Problem: 7 >> How are wastes carried to the kidney for removal?a. In cellsb. In the urinec. In bloodd. In interstitial fluid
Answer Preview: Some wastes, including ions and some drugs remaining in the blo…

, Chapter: 20 -Problem: 15 >> The extremely low precipitation of subtropical desert biomes might lead one to expect fire to be a major disturbance factor; however, fire is more common in the temperate grassland biome than in the subtropical desert biome. Why is this?
Answer Preview: Well, everybody's is Ricky. And today we're gonna work o…

, Chapter: 17 -Problem: 12 >> Foreign particles circulating in the blood are filtered by the ____________.a. Spleenb. Lymph nodesc. MALTd. Lymph
Answer Preview: b. Lymph nodes The lymph nodes are small, bean-shape…

, Chapter: 3 -Problem: 7 >> A typical prokaryotic cell __________________ compared to a eukaryotic cell.a. Is smaller in size by a factor of 100b. Is similar in sizec. Is smaller in size by a factor of one milliond. Is larger in size by a factor of 10
Answer Preview: A prokaryotic cell is smal…

, Chapter: 18 -Problem: 9 >> Which female organ has an endometrial lining that will support a developing baby?a. Labia minorab. Breastc. Ovariesd. Uterus
Answer Preview: Reproduction is a biological process of forming offspring by the fusion of male and female gamet…

, Chapter: 19 -Problem: 13 >> Which type of country has the greatest proportion of young individuals?a. Economically developedb. Economically underdevelopedc. Countries with zero population growthd. Countries in Europe
Answer Preview: the type of country having the greatest proporti…

, Chapter: 17 -Problem: 10 >> The humoral immune response depends on which cells?a. TC cellsb. B cellsc. B and TH cellsd. TC and TH cells
Answer Preview: Answer c Nikki protects the extra soundless spaces. Don't be nobodies. …

, Chapter: 7 -Problem: 5 >> Meiosis produces ________ daughter cells.a. Two haploidb. Two diploidc. Four haploidd. Four diploid
Answer Preview: A) two diploid and four haploid . Basically the mitosis takes place in haploid cells …

, Chapter: 17 -Problem: 2 >> Influenza virus is packaged in a viral envelope, which fuses with the plasma membrane. This way, the virus can exit the host cell without killing it. What advantage does the virus gain by keeping the host cell alive? Data in figure 17.6 Transcribed Image Text: Nucleus Influenza virus 364 Receptor Ep
Answer Preview: The virus can only infect cells that are actively repli…

, Chapter: 9 -Problem: 15 >> Transcribe and translate the following DNA sequence (nontemplate strand): 5'-ATGGCCGGTTATTAAGCA-3'
Answer Preview: Transcription is a process in which one strand of DNA known as template strand is known as converted into mRNA which is the first step in the process …

, Chapter: 19 -Problem: 1 >> As this graph shows, population density typically decreases with increasing body size. Why do you think this is the case?  Data in Figure 19.2  Transcribed Image Text: Relationship between Population and Body Mass in Australian Mammals Log density (km²) 3.0- 2.0- 1.0- 0.0+ 0.0 Quoll Bandicoot ? A Wo
Answer Preview: To write: The population density depending upon the body size of the organisms. Introduction: Popula…

, Chapter: 21 -Problem: 11 >> Describe two types of compounds from living things that are used as medications.
Answer Preview: There are two types of compounds from living things that …

, Chapter: 18 -Problem: 5 >> External fertilization occurs in which type of environment?a. Aquaticb. Forestedc. Savannad. Steppe
Answer Preview: c. Savanna. External fertilization occurs at the boundary between two separate ecosystems, one that …

, Chapter: 21 -Problem: 8 >> Certain species of parrot cannot be brought to the United States to be sold as pets. What is the name of the legislation that makes this illegal?a. Red Listb. Migratory Bird Actc. CITESd. Endangered Species Act (ESA)
Answer Preview: CITES it is atreaty to protect the endangerd species of ani…

, Chapter: 9 -Problem: 9 >> How long would the peptide be that is translated from this MRNA sequence: 5'-AUGGGCUACCGA-3'?a. 0b. 2c. 3d. 4
Answer Preview: From the mRNA sequence 5'- AUGGGCUAC…

, Chapter: 19 -Problem: 12 >> A country with zero population growth is likely to be ________.a. In Africab. In Asiac. Economically developedd. Economically underdeveloped
Answer Preview: A country with zero population growth is likely to be economically developed. Clarifi…

, Chapter: 18 -Problem: 4 >> Genetically unique individuals are produced through ________.a. Sexual reproductionb. Parthenogenesisc. Buddingd. Fragmentation
Answer Preview: c. Budding. Budding is a form of asexual reproduction that results in geneti…

, Chapter: 19 -Problem: 15 >> The first species to live on new land, such as that formed from volcanic lava, are called________.a. Climax communityb. Keystone speciesc. Foundation speciesd. Pioneer species
Answer Preview: c. Foundation species. The first species to live on new land, such as that formed from volcanic lava…

, Chapter: 16 -Problem: 26 >> Which part of the nervous system directly controls the digestive system?a. Parasympathetic nervous systemb. Central nervous systemc. Spinal cordd. Sensory-somatic nervous system
Answer Preview: The autonomic nervous system is a component of the periphera…

, Chapter: 20 -Problem: 14 >> Why are drinking water supplies still a major concern for many countries?
Answer Preview: Despite improving protection from infectious diseases, unsustainable water con…

, Chapter: 16 -Problem: 30 >> What is the role of minerals in maintaining good health?
Answer Preview: Minerals are an essential part of our diet. They are not prod…

, Chapter: 20 -Problem: 2 >> In which of the following regions would you expect to find photosynthetic organisms? a. The aphotic zone, the neritic zone, the oceanic zone, and the benthic realm.b. The photic zone, the intertidal zone, the neritic zone, and the oceanic zone.c. The photic zone, the abyssal zone, the neritic zone, and the oceanic zone.d. The pelagic realm, the aphotic zone, the neritic zone, and the oceanic zone.
Answer Preview: Correct answer is option (b) i e. The photic zone, the intertidal zone, neritic zone, oceani…

, Chapter: 16 -Problem: 23 >> What kind of muscle tissue is found surrounding the urinary bladder?a. Cardiacb. Skeletalc. Striatedd. Smooth
Answer Preview: The urinary bladder is a hollow organ present in the abdominal region and responsib…

, Chapter: 2 -Problem: 14 >> Explain why water is an excellent solvent.
Answer Preview: Water is an excellent solvent because it is polar. The electron on one side of the molecu…

, Chapter: 15 -Problem: 14 >> The circulatory fluid in echinoderms is _____.a. Bloodb. Mesohylc. Waterd. Saline
Answer Preview: The correct answer is C. Water Explanation: Echinoderms are inver…

, Chapter: 1 -Problem: 8 >> Give an example of how applied science has had a direct effect on your daily life.
Answer Preview: An example of how applied science has a direct …

, Chapter: 15 -Problem: 16 >> Members of Chondrichthyes differ from members of Osteichthyes by having a ________.a. Jawb. Bony skeletonc. Cartilaginous skeletond. Two sets of paired fins
Answer Preview: The clade Chondrichthyes are present under Gnathostomes a…

, Chapter: 9 -Problem: 12 >> Describe the organization of the eukaryotic chromosome.
Answer Preview: Eukaryotic chromosomes are found in the cell's nucleus. Th…

, Chapter: 16 -Problem: 31 >> Discuss why obesity is a growing epidemic.
Answer Preview: Pregnancy and childhood obesity are at an all-time high and are a significant contributor to type 2 …

, Chapter: 20 -Problem: 11 >> Where would you expect to find the most photosynthesis in an ocean biome?a. Aphotic zoneb. Abyssal zonec. Benthic realmd. Intertidal zone
Answer Preview: a. Aphotic zone - There is some photosynthesis, but it is much less than in deeper zo…

, Chapter: 15 -Problem: 25 >> Describe a potential advantage and disadvantage of the cuticle of ecdysozoans.
Answer Preview: An advantage is that it is a tough covering that is pr…

, Chapter: 21 -Problem: 12 >> Describe the mechanisms by which human population growth and resource use causes increased extinction rates.
Answer Preview: Human population growth and resource use causes increased extinction rates. …

, Chapter: 17 -Problem: 1 >> Which of the following statements about virus structure is true?a. All viruses are encased in a viral membrane.b. The capsomere is made up of small protein subunits called capsids.c. DNA is the genetic material in all viruses.d. Glycoproteins help the virus attach to the host cell. Data in Figure 17.5 Transcribed Image Tex
Answer Preview: Summary Introduction Introduction: Viruses have diversity in terms of the structure, the method of replication, host and target cells. Viruses are non…

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, Chapter: 15 -Problem: 17 >> Squamata includes _____.a. Crocodiles and alligatorsb. Turtlesc. Tuatarasd. Lizards and snakes
Answer Preview: Crocodilia (crocodiles and alligators…

, Chapter: 3 -Problem: 6 >> Which of these do all prokaryotes and eukaryotes share?a. Nuclear envelopeb. Cell wallsc. Organellesd. Plasma membrane
Answer Preview: d. Plasma membrane The plasma membrane is …

, Chapter: 18 -Problem: 1 >> Which of the following statements about the male reproductive system is false?a. The vas deferens carries sperm from the testes to the seminal vesicles.b. The ejaculatory duct joins the urethra.c. Both the prostate and the bulbourethral glands produce components of the semen.d. The prostate gland is located in the testes. Data in Figure 18.12
Answer Preview: a. The urethra carries the semen (both sperm an…

, Chapter: 19 -Problem: 16 >> A symbiotic relationship where both of the co-existing species benefit from the interaction is called ________.a. Commensalismb. Parasitismc. Mutualismd. Communism
Answer Preview: mutualism Answer and Explanation: A symbiotic relatio…

, Chapter: 16 -Problem: 33 >> How does the structure of alveoli maximize gas exchange?
Answer Preview: Gas exchange is facilitated by the structure of alveoli. Alveoli have several unique p…

, Chapter: 19 -Problem: 21 >> Describe the age structures in rapidly growing countries, slowly growing countries, and countries with zero population growth.
Answer Preview: You know so rapidly growing countries slow growing countries and countries that have more like 0 gro…

, Chapter: 18 -Problem: 15 >> What do you think would happen if multiple sperm fused with one egg?
Answer Preview: Some eggs will release more than one sperm into the (extinct) fallopian tubes. If th…

, Chapter: 2 -Problem: 12 >> Why are hydrogen bonds and van der Waals interactions necessary for cells?
Answer Preview: Why are hydrogen bonds and van der Waals interactions nec…

, Chapter: 17 -Problem: 6 >> Which statement is true of viral replication?a. In the process of apoptosis, the cell survives.b. During attachment, the virus attaches at specific sites on the cell surface.c. The viral capsid helps the host cell produce more copies of the viral genome.d. MRNA works outside of the host cell to produce enzymes and proteins.
Answer Preview: "Ans.: c. The viral capsid helps the host cell produce more copies of the viral genome." Review…

, Chapter: 4 -Problem: 11 >> Which of the following fermentation methods can occur in animal skeletal muscles? a. Lactic acid fermentationb. Alcohol fermentationc. Mixed acid fermentationd. Propionic fermentation
Answer Preview: Answer: The correct answer would be lactic acid ferment…

, Chapter: 16 -Problem: 20 >> Among other bones, the axial skeleton includes the ________.a. Thoracic cage and vertebral columnb. Thoracic cage and pectoral girdlec. Skull and pelvic girdled. Pectoral and pelvic girdles
Answer Preview: a. Thoracic cage and vertebral …

, Chapter: 19 -Problem: 11 >> A forest fire is an example of ________ regulation.a. Density-dependentb. Density-independentc. R-selectedd. K-selected
Answer Preview: b. Density-independent Fire is a destructive process that consum…

, Chapter: 15 -Problem: 13 >> Echinoderms in their larval state have _____.a. Triangular symmetryb. Radial symmetryc. Hexagonal symmetryd. Bilateral symmetry
Answer Preview: Bilateral symmetry. Echinoderms in their larval state have bilateral …

, Chapter: 9 -Problem: 2 >> Which of the following does cytosine pair with?a. Guanineb. Thyminec. Adenined. A pyrimidine
Answer Preview: Step 1 A gene is the fundamental physical and useful unit of heredity. Genes are comprised of DNA. A …

, Chapter: 18 -Problem: 3 >> In which group is parthenogenesis a normal event?a. Chickensb. Beesc. Rabbitsd. Sea stars
Answer Preview: Parthenogenesis can be defined as the reproduction of an ovum without proper fertilization. It is a …

, Chapter: 9 -Problem: 8 >> The RNA components of ribosomes are synthesized in the ________. a. Cytoplasmb. Nucleusc. Nucleolusd. Endoplasmic reticulum
Answer Preview: Correct answer - (C) Nucleolus Explanation Ribonuc…

, Chapter: 16 -Problem: 24 >> Neurons contain _________, which can receive signals from other neurons.a. Axonsb. Mitochondriac. Dendritesd. Golgi bodies
Answer Preview: c. Dendrites Dendrites are the neural structures …

, Chapter: 19 -Problem: 22 >> Describe the competitive exclusion principle and its effects on competing species.
Answer Preview: The competition-suppression effect and the competitive exclusion …

, Chapter: 20 -Problem: 10 >> Why is the tundra treeless?a. Lack of sufficient waterb. Permanently frozen groundc. Winters too harshd. Too many fires
Answer Preview: Answer and Explanation: The tundra is tree…

, Chapter: 21 -Problem: 14 >> Describe two considerations in conservation preserve design.
Answer Preview: 1. The way a preserve is designed can be most …

, Chapter: 21 -Problem: 4 >> Pollination is an example of ________.a. A possible source of new drugsb. Chemical diversityc. An ecosystem serviced. Crop pest control
Answer Preview: The transfer of pollen grains to a flower's stigma is known as pollination. The pollen grains are p…

, Chapter: 3 -Problem: 3 >> A doctor injects a patient with what he thinks is isotonic saline solution. The patient dies, and autopsy reveals that many red blood cells have been destroyed. Do you think the solution the doctor injected was really isotonic? Data in Figure 3.22 Transcribed Image Text: Hypertonic solution H?O H?O
Answer Preview: The solution the doctor injected is not isotonic. An isotonic solution should have same solute conce…

, Chapter: 9 -Problem: 7 >> Portions of eukaryotic mRNA sequence that are removed during RNA processing are ________.a. Exonsb. Capsc. Poly-A tailsd. Introns
Answer Preview: In the process of RNA processing, the introns are removed in th…

, Chapter: 19 -Problem: 23 >> Describe the potential effects when a keystone species is removed from a community.
Answer Preview: Keystone species have low functional redundancy. This means that if the species were …

, Chapter: 19 -Problem: 8 >> The maximum growth rate characteristic of a species is called its ________.a. Limitb. Carrying capacityc. Biotic potentiald. Exponential growth pattern
Answer Preview: b. Carrying capacity The maximum growth rate characteristic of a species is …

, Chapter: 19 -Problem: 14 >> Which of the following is not a way that humans have increased the carrying capacity of the environment?a. Agricultureb. Using large amounts of natural resourcesc. Domestication of animalsd. Use of language
Answer Preview: Answer: c This question tests the ability to understand that farming, or …

, Chapter: 3 -Problem: 2 >> Why does the cis face of the Golgi not face the plasma membrane?  Data in figure 3.13 Transcribed Image Text: Nucleus Rough ER Golgi apparatus Transport vesicle O cis face 000 ?°o Protein for export Transport vesicle Plasma membrane Smooth ER Cisternae trans face
Answer Preview: ANSWER Golgi complex is cell organelle responsible f…

, Chapter: 20 -Problem: 12 >> A key feature of estuaries isa. Low light conditions and high productivityb. Salt water and fresh waterc. Frequent algal bloomsd. Little or no vegetation
Answer Preview: It has a rich by diversity where the water a…

, Chapter: 1 -Problem: 3 >> The smallest unit of biological structure that meets the functional requirements of “living” is the ________.a. Organb. Organellec. Celld. Macromolecule
Answer Preview: Ans- C, Cell The smallest functional unit of biological structure that fulfills th…

, Chapter: 20 -Problem: 17 >> Describe the conditions and challenges facing organisms living in the intertidal zone.
Answer Preview: Animals living in the intertidal zone must be able to to…

, Chapter: 2 -Problem: 6 >> Using a pH meter, you find the pH of an unknown solution to be 8.0. How would you describe this solution?a. Weakly acidicb. Strongly acidicc. Weakly basicd. Strongly basic
Answer Preview: Step 1 Introduction: pH is a measure of the acidity or alkalinity of a solut…

, Chapter: 2 -Problem: 5 >> Which of the following statements is not true?a. Water is polar.b. Water stabilizes temperature.c. Water is essential for life.d. Water is the most abundant atom in Earth’s atmosphere.
Answer Preview: Importance of Water. Step 2 Answer: d. Water is the most abundant molecule in the Earths atmosphe…

, Chapter: 4 -Problem: 16 >> With regard to enzymes, why are vitamins and minerals necessary for good health? Give examples.
Answer Preview: Enzymes are proteins. Vitamins and minerals, like selenium, co…

, Chapter: 7 -Problem: 16 >> Individuals with trisomy 21 are more likely to survive to adulthood than individuals with trisomy 18. Based on what you know about aneuploidies from this module, what can you hypothesize about chromosomes 21 and 18?
Answer Preview: Trisomy is the presence of three copies a chromosome, rather than two. Humans …

, Chapter: 6 -Problem: 11 >> FtsZ proteins direct the formation of a ________ that will eventually form the new cell walls of the daughter cells.a. Contractile ringb. Cell platec. Cytoskeletond. Septum
Answer Preview: b. Cell plate EXPLANATION: The FtsZ protein is encoded by the FtsZ gene. This prot…

, Chapter: 4 -Problem: 9 >> What do the electrons added to NAD+ do?a. They become part of a fermentation pathway.b. They go to another pathway for ATP production.c. They energize the entry of the acetyl group into the citric acid cycle.d. They are converted into NADP.
Answer Preview: Option b is correct They go to another pathway for ATP produc…

, Chapter: 5 -Problem: 8 >> Which color(s) of light does chlorophy

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