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Chapter: 29 -Problem: 1 >> In what ways do normal red and white blood cells differ?
Answer Preview: In contrast to red blood cells, white …

, Chapter: 21 -Problem: 3 >> What are some advantages and disadvantages of having an exoskeleton?
Answer Preview: Exoskeletons provide protection for the animal …

, Chapter: 15 -Problem: 4 >> What types of vectors are used to carry DNA from one species into the DNA of another species? Give examples.
Answer Preview: Biological and mechanical vectors are u…

, Chapter: 14 -Problem: 3 >> What other problems might DNA fingerprinting of bear hair solve?
Answer Preview: DNA fingerprinting on bears might h…

, Chapter: 24 -Problem: 3 >> What skull features do predator animals have in common?
Answer Preview: The orbital fossa of predator animals …

, Chapter: 20 -Problem: 3 >> What do two earthworms exchange during mating? Explain your answer.
Answer Preview: The two worms exchange sp…

, Chapter: 26 -Problem: 2 >> Why would a muscle’s threshold of stimulation change as its workload changes?
Answer Preview: As workload on a muscle increases, the numb…

, Chapter: 18 -Problem: 2 >> According to your observations of one of the mutant plants, what function is controlled by the knocked out gene? Explain your answer.
Answer Preview: The observe that one of the mutan…

, Chapter: 14 -Problem: 6 >> Monarch butterfly populations are found east and west of the Rocky Mountains. How could DNA fingerprinting technology be used to establish that they constitute one breeding population or two separate breeding populations? Explain your answer.
Answer Preview: If the genetic fingerprints of the two populations …

, Chapter: 20 -Problem: 2 >> What structure in the earthworm has a similar function as the human heart? Explain your answer.
Answer Preview: The muscular dorsal blood …

, Chapter: 16 -Problem: 3 >> A population in which the frequency of alleles remains the same over generations is said to be in genetic equilibrium. Describe one mechanism by which a population’s genetic equilibrium can be disrupted and result in the process of evolution?
Answer Preview: A new species can evolve when a population has been …

, Chapter: 24 -Problem: 2 >> What skull features do prey animals have in common?
Answer Preview: The orbital fossa are usually loc…

, Chapter: 25 -Problem: 4 >> How did the mealworm respond to food as a stimulus? What type of behavior is displayed in the mealworm’s response to food? Why is this behavior important?
Answer Preview: It responded to food by being attracted …

, Chapter: 13 -Problem: 5 >> Explain why all mutations are not necessarily harmful?
Answer Preview: Mutation is the foundation of change for …

, Chapter: 29 -Problem: 4 >> Describe the difference between a communicable disease and an inherited disease. Use examples you have studied in this exploration to support your description?
Answer Preview: Infectious diseases are caused by pathogens. They are said to be communicable because they c…

, Chapter: 2 -Problem: 1 >> Suggest reasons why the information represented in the pyramid of numbers of animals of one of the ecosystems you studied may not truly represent that ecosystem?
Answer Preview: Many more plant and animal spec…

, Chapter: 16 -Problem: 4 >> In which of the simulated environments do individuals of the genotype Aa survive best?
Answer Preview: Individuals of the genot…

, Chapter: 9 -Problem: 3 >> Why is photosynthesis important to you?
Answer Preview: Photosynthesis is perhaps one of th…

, Chapter: 28 -Problem: 1 >> Explain why the menu of food choices you made is nutritious, meaning the food choices follow the government’s recommendations for Calories and nutrients?
Answer Preview: For example: The menu meets al…

, Chapter: 1 -Problem: 2 >> If there was no ECB infestation in a certain year, would a farmer gain or lose financially by planting Bt corn?
Answer Preview: Explain why The farmer would …

, Chapter: 18 -Problem: 1 >> Did any of the mutant plants show a variance in phenotypes from the wild-type plants under one of the experimental conditions? Explain your answer.
Answer Preview: Some mutants show phenotypical variance …

, Chapter: 6 -Problem: 3 >> What is an indicator species? How are indicator species used to assess pollution levels in the environment?
Answer Preview: An indicator species is an organism that can be used to det…

, Chapter: 19 -Problem: 6 >> Suppose you coated the leaves of a plant with petroleum jelly. How would the plants’ rate of transpiration be affected?
Answer Preview: The plant would not transpire at all b…

, Chapter: 28 -Problem: 5 >> Do any of the items you selected provide more than 30% in any nutritional area? If so, which foods and which nutrients? Why did you choose those foods?
Answer Preview: Yes, I chose onion rings with 35% of the daily …

, Chapter: 21 -Problem: 4 >> Which of the five classes of arthropods is the most diverse? Explain.
Answer Preview: Insects are the most diverse and successful group of arthropods. They should include f…

, Chapter: 26 -Problem: 5 >> What are some advantages of performing this experiment in a simulated environment?
Answer Preview: The computer simulation can be repeated over and over without harm to …

, Chapter: 27 -Problem: 7 >> What effect might obesity have on blood pressure? Does obesity alone cause a person to be at risk for high blood pressure? What other factors, in combination with obesity, might increase a person’s risk for high blood pressure?
Answer Preview: The data show that obesity is, indeed, a risk factor for hypertension. However, seven of the …

, Chapter: 18 -Problem: 4 >> Why can the Arabidopsis plant serve as a model for all flowering plants? Explain your answer.
Answer Preview: Arabidopsis is considered to contain a basic set of gene…

, Chapter: 15 -Problem: 7 >> Are there any factors other than technical ones that might slow ñ or even prevent ñ the use of bioengineering?
Answer Preview: Ethical questions, such as concerns regarding unintentional cru…

, Chapter: 19 -Problem: 2 >> Describe any experimental controls used in the Investigation?
Answer Preview: Allowing the plant to tr…

, Chapter: 21 -Problem: 2 >> Arthropods are the most diverse group of animals. Describe some characteristics of arthropods that may have contributed to their great evolutionary success?
Answer Preview: They should include facts similar to the following: …

, Chapter: 24 -Problem: 6 >> Describe the characteristics of each of the animal skulls that you classified?
Answer Preview: For example, the [select one of the …

, Chapter: 19 -Problem: 3 >> What environmental factors that you tested increased the rate of transpiration?
Answer Preview: Was the rate of transpiration increased for all plants tested? Two of the factors …

, Chapter: 13 -Problem: 2 >> How many amino acids were changed?
Answer Preview: In the first sequence I worked with there were …

, Chapter: 21 -Problem: 5 >> For each of the following characteristics, indicate whether the trait is common to Phylum Arthropoda or specific to certain classes of arthropods: wings, chewing mouthparts, jointed appendages, number of legs, segmented bodies, type of respiratory structure, exoskeleton?
Answer Preview: The following traits are common to Phylum Arthropod…

, Chapter: 26 -Problem: 4 >> Describe an experiment you might perform to determine which leg muscles of a frog are important for jumping long distances?
Answer Preview: An experiment very similar to the one performed in this Investigatio…

, Chapter: 16 -Problem: 6 >> Which set of data represents a type of natural selection that stabilizes the allele frequencies of the population?
Answer Preview: In Environment 3 the heter…

, Chapter: 19 -Problem: 1 >> Describe the process of transpiration in vascular plants?
Answer Preview: The process in which water evaporates through the stomata in leave…

, Chapter: 17 -Problem: 5 >> What is the definition of the concept of a species in Eubacteria based on? Explain your answer, taking into consideration that these organisms do not reproduce sexually.
Answer Preview: Bacterial species can be d…

, Chapter: 23 -Problem: 7 >> How could a paleontologist determine that a dinosaur was a plant eater or a carnivore?
Answer Preview: Paleontologists look for clues by examining fossils of scat (excrement), fossil foot prints, gr…

, Chapter: 15 -Problem: 6 >> Why is it essential that the same restriction enzyme be used to cleave (cut) the DNA of both organisms used to create a transgenic organism?
Answer Preview: To be spliced together, both pieces of DNA must have …

, Chapter: 15 -Problem: 3 >> What is a plasmid? How is a plasmid used in gene splicing?
Answer Preview: A plasmid is a small ring of …

, Chapter: 23 -Problem: 6 >> What information would an artist use to reconstruct a model of a dinosaur?
Answer Preview: Fossilized bones and teeth, the position the …

, Chapter: 15 -Problem: 5 >> What is a ‘transgenic organism’? Give examples.
Answer Preview: A transgenic organism is an organism that contains functional foreign …

, Chapter: 25 -Problem: 5 >> How did the mealworm respond to cold water as a stimulus? Was the response behavioral or metabolic?
Answer Preview: It responded to the cold water by becoming sluggish and not moving…

, Chapter: 24 -Problem: 4 >> What can be learned by studying the dentition of various mammal skulls?
Answer Preview: The dentition of mammal skulls indicates the types of food eaten by the animal. If the mammal is …

, Chapter: 25 -Problem: 2 >> Which mealworm behaviors were reflexes? Why?
Answer Preview: When the mealworm is to…

, Chapter: 26 -Problem: 1 >> Based on the results of your investigation, what conclusions can you draw about the relationship between a muscle’s workload and its threshold of stimulation?
Answer Preview: As the workload …

, Chapter: 13 -Problem: 1 >> Describe the differences between the original and mutated sequences?
Answer Preview: The first original sequence I worked with ha…

, Chapter: 19 -Problem: 7 >> Of what value to a plant is the ability to lose water through transpiration?
Answer Preview: Transpiration all…

, Chapter: 18 -Problem: 5 >> Is it possible to have a knockout mutant plant that shows no visible phenotype that is different from the wild-type plant? Explain your answer.
Answer Preview: Many knockout mutant pla…

, Chapter: 29 -Problem: 2 >> Which type of white blood cell would you expect to be most common in a normal blood smear?
Answer Preview: The most c…

, Chapter: 29 -Problem: 3 >> A differential count of white blood cells from a patient gave the absolute number of lymphocytes as 8000 per mm3 and the total number of WBC white blood cells as 12,000 per mm3. Calculate the percentage of lymphocytes in this sample of WBCwhite blood cells. Is this a normal or abnormal percentage? Explain your answer.
Answer Preview: In this blood sample 67% of the w…

, Chapter: 18 -Problem: 3 >> Describe how any of the plants you observed differed from each other?
Answer Preview: They may report differences in …

, Chapter: 14 -Problem: 4 >> The police arrested three suspects and obtained DNA fingerprints from each individual. What does the investigator need to establish to determine which of the three might be the culprit in the crime? Explain your answer.
Answer Preview: A DNA sample from the crime …

, Chapter: 27 -Problem: 6 >> List the risk factors associated with hypertension. Based on your observations, which risk factor do you think is most closely associated with hypertension?
Answer Preview: Risk factors for hypertension include family history, hi…

, Chapter: 27 -Problem: 4 >> Did the results of your experiment support your hypothesis? Why or why not? Based on your experiment, what conclusions can you draw about the relationship between age and gender to group blood pressure averages?
Answer Preview: For the most part, the results of the experiment supported …

, Chapter: 20 -Problem: 4 >> Describe the difference between a closed and an open circulatory system?
Answer Preview: Earthworms have a closed circulatory system. The bloo…

, Chapter: 19 -Problem: 5 >> Which species of plants that you tested had the highest transpiration rates? Why do you think different species of plants transpire at different rates?
Answer Preview: Of the plant species tested, dieffenbachia (a large-leaf pl…

, Chapter: 23 -Problem: 1 >> Describe the steps you took to estimate the age of one of the fossils?
Answer Preview: They should describe how they deter…

, Chapter: 20 -Problem: 1 >> What part of the digestive system would you see in a cross section anterior to the gizzard?
Answer Preview: One would see the cr…

, Chapter: 28 -Problem: 2 >> How does a 2 000 Calorie daily menu compare to your recommended Calorie intake amount on the chart? What would you do to your 2 000 Calorie menu to make it better match your recommended Calorie intake?
Answer Preview: Since I am a moderately active 16-yea…

, Chapter: 17 -Problem: 4 >> Various streptococci and lactobacilli were traditionally grouped together as lactic acid bacteria because of their characteristic fermentation. Most of them were found to have a DNA Guanine plus Cystosine (G + C) content of approximately 40%, but one of them had a G + C content of 58%. Should this organism remain in the same genus as the rest of the bacterial species? Explain your answer.
Answer Preview: If the taxonomy of bacteria would be entirely based on evolutionary relationships…

, Chapter: 28 -Problem: 3 >> How can you use the Nutrition Facts label to make healthy decisions?
Answer Preview: I can use the labels to comp…

, Chapter: 20 -Problem: 5 >> Do earthworms have a front and a back end? Explain your answer.
Answer Preview: Yes, they do. Their basic body plan is a tube within a tube. Food …

, Chapter: 12 -Problem: 8 >> Explain why sex-linked traits appear more often in males than in females?
Answer Preview: In order for a sex-linked trait to appear in females, there must be recessive alleles on both of th…

, Chapter: 17 -Problem: 3 >> Is it possible that two prokaryotic organisms show phenotypic similarities, but do not share close evolutionary relatedness? Explain your answer.
Answer Preview: Yes, phylogenetically unrela…

, Chapter: 16 -Problem: 2 >> Did the effect of natural selection vary with different starting allele frequencies in identical environments? Why or why not?
Answer Preview: The initial allele frequ…

, Chapter: 14 -Problem: 1 >> DNA fingerprinting identifies individual bears and also allows for determining the gender of a bear. What information does it not provide that might be useful for deciding on conservation efforts?
Answer Preview: The technology does n…

, Chapter: 20 -Problem: 6 >> What characteristics distinguish an annelid from other worms?
Answer Preview: All annelids are bilaterally …

, Chapter: 14 -Problem: 5 >> How could DNA fingerprinting technology is used to establish that a highway cutting through grizzly bear habitat stops the bears from moving from one side to the other? Explain your answer.
Answer Preview: DNA fingerprinting could establish breeding p…

, Chapter: 27 -Problem: 1 >> Use your knowledge about the heart and the circulatory system to make a hypothesis about how the average blood pressure for a group of people is affected by manipulating the age and gender of the group members?
Answer Preview: The average blood pressure for a group of peo…

, Chapter: 23 -Problem: 4 >> What evidence supports the hypothesis that birds evolved from dinosaurs?
Answer Preview: Birds do not only sha…

, Chapter: 14 -Problem: 2 >> Bear hair may also be collected from trees that the bears rub against. In a study using DNA fingerprinting of hair collected from rub trees, it was found that the population in the area contained more male bears than female bears. Explain this outcome?
Answer Preview: The proportion of males using rub …

, Chapter: 23 -Problem: 3 >> How could you determine that two species of dinosaurs lived in the same time period?
Answer Preview: Finding fossils of the two species of dinosaurs that can b…

, Chapter: 28 -Problem: 4 >> Did the menu you created contain the foods that you like to eat? Explain why or why not.
Answer Preview: I found several foods that I really liked and would have liked to have included …

, Chapter: 29 -Problem: 6 >> Why is the presence of a larger than normal number of neutrophils indicative of an infection? Explain your answer.
Answer Preview: Neutrophils are phagocy…

, Chapter: 25 -Problem: 3 >> Which mealworm behaviors were instinctive? Why?
Answer Preview: When bran flakes are placed in the petri dish …

, Chapter: 24 -Problem: 1 >> How do the various characteristics of animal skulls indicate the importance of one sense over another?
Answer Preview: The jaguar skull has a very small r…

, Chapter: 14 -Problem: 7 >> Describe the advantages and disadvantages of radiotelemetry and DNA fingerprinting methods for obtaining wildlife population data?
Answer Preview: Radiotelemetry has the advantage of providing data on the health, age, and reproductive stat…

, Chapter: 15 -Problem: 1 >> DNA is made up of two separate strands of base sequences. The same sequence is found on both strands, but running in opposite directions. What word describes this characteristic?
Answer Preview: Palindrome. Palindrom…

, Chapter: 28 -Problem: 6 >> What did you notice about the nutrients in fast foods?
Answer Preview: I compared hamburgers, French fries, …

, Chapter: 15 -Problem: 2 >> What does the term ‘sticky ends’ refer to in gene splicing?
Answer Preview: Some restrictive enzymes cut DNA sequences so that double-stranded …

, Chapter: 13 -Problem: 6 >> Does changing the sequence of nucleotides always result in a different amino acid sequence? Explain.
Answer Preview: Not always. Sometimes a nucleotide change in a …

, Chapter: 29 -Problem: 5 >> Why are white blood cells in a stained blood smear usually counted at low power under a microscope? Explain your answer.
Answer Preview: In studying a normal blood smear with a light microscope under a high-power objective, it may …

, Chapter: 19 -Problem: 4 >> Did any of the environmental factors (heat, light, or wind) increase the transpiration rate more than the others? Why?
Answer Preview: Yes. Adding wind increased the transp…

, Chapter: 27 -Problem: 3 >> Analyze the results of your experiment. Explain any patterns you observed?
Answer Preview: The experimental results reveal the following patte…

, Chapter: 24 -Problem: 5 >> How do carnivore and primate skulls differ?
Answer Preview: Carnivores generally have longer rostrums than primates. Their sense of smell is one of their …

, Chapter: 2 -Problem: 5 >> What might happen to an ecological pyramid of numbers in a forest ecosystem if most of the deer were killed due to hunting by people and disease?
Answer Preview: The number of third order heterotrophs such as bears, wolfs, cougars and coyo…

, Chapter: 4 -Problem: 7 >> Study the data you collected. Why is the population in the reef tank stable?
Answer Preview: Adding the pH buffer, the snails and shrimp, and the extr…

, Chapter: 5 -Problem: 6 >> Describe what happened when the Paramecium populations were mixed in the same test tube. Do the results support the principle of competitive exclusion?
Answer Preview: The results support the principle of competitive excl…

, Chapter: 9 -Problem: 4 >> What are the processes in cellular respiration?
Answer Preview: Glycolysis and the Krebs cycle are the process…

, Chapter: 5 -Problem: 1 >> Make a hypothesis about how you think the two species of Paramecium will grow alone and how they will grow when they are grown together?
Answer Preview: Either species of Paramecium growing alone will grow r…

, Chapter: 10 -Problem: 1 >> Based on your data and observations, what are some of the differences between normal cells and cancer cells?
Answer Preview: Both normal cells and cancer cells spend the same amount of time in mito…

, Chapter: 6 -Problem: 4 >> Suppose you are an ecologist studying the effects of acid precipitation on plant life. Describe an experiment you would perform in order to determine which plant species would be a useful indicator species for acid rain pollution?
Answer Preview: The setup of the experiment would begin with the planting of sever…

, Chapter: 11 -Problem: 2 >> Can the genotype for a gray-bodied fly be determined? Why or why not? Describe all of the possible genotypes for a fly with that phenotype.
Answer Preview: No, it is difficult to determine the genotype for a gray-bodi…

, Chapter: 4 -Problem: 1 >> List the fish and invertebrates you selected after the nitrogen cycling process?
Answer Preview: I selected a maroon cl…

, Chapter: 5 -Problem: 2 >> Explain how you tested your hypothesis?
Answer Preview: The hypothesis was tested by growing Parameci…

, Chapter: 1 -Problem: 3 >> What might happen if Bt corn affects non-target organisms such as beneficial insects or harmless insects?
Answer Preview: The balance of the ecosystem migh…

, Chapter: 6 -Problem: 2 >> Describe how acid rain affects ecosystems?
Answer Preview: Because all organisms are adapted to survive within a certain pH …

, Chapter: 7 -Problem: 2 >> What is the maximum initial reaction rate for this enzyme at pH 7?
Answer Preview: The maximum init…

, Chapter: 7 -Problem: 3 >> Explain why the maximum initial reaction rate cannot be reached at low substrate concentrations?
Answer Preview: The frequency of su…

, Chapter: 9 -Problem: 6 >> Describe the similarities and differences between photosynthesis and cell respiration?
Answer Preview: Photosynthesis and cellular respiration can be viewed as complementary p…

, Chapter: 2 -Problem: 6 >> What would happen to an ecosystem if the decomposers disappeared?
Answer Preview: The movement of materials through an ecosystem is c…

, Chapter: 2 -Problem: 4 >> Does the population size increase or decrease at higher trophic levels in the pyramid of numbers of an ecosystem consisting of a tree, insects (that are herbivores) and birds feeding on the insects?
Answer Preview: One tree is food for many herbivorous insects and a numb…

, Chapter: 12 -Problem: 4 >> In a mating between a red-eyed male fruit fly and a red-eyed heterozygous female, what percentage of the female offspring are expected to be carriers? How did you determine the percentage?
Answer Preview: Fifty percent of the females are expected to be carriers. This was determ…

, Chapter: 11 -Problem: 4 >> What genetic information can be obtained from a Punnett square? What genetic information cannot be determined from a Punnett square?
Answer Preview: A Punnett square determines all of the ways …

, Chapter: 2 -Problem: 2 >> According to your data, what is the ratio of third-order consumers to producers?
Answer Preview: Explain your answer. The ratio of third order heterotrophs to produc…

, Chapter: 4 -Problem: 6 >> Study the data you collected. Describe the occurrences of ammonia, nitrite, and nitrate in your tank?
Answer Preview: I cycled the tank during weeks …

, Chapter: 7 -Problem: 4 >> What does your data indicate about the optimum pH level for this enzymecatalyzed reaction?
Answer Preview: Under all concentrations, th…

, Chapter: 5 -Problem: 5 >> Explain the differences in the population growth patterns of the two Paramecium species. What does this tell you about how Paramecium aurelia uses available resources?
Answer Preview: Paramecium aurelia divide faster than …

, Chapter: 4 -Problem: 4 >> Describe the final population of the reef tank?
Answer Preview: The reef tank contained 3 dams…

, Chapter: 11 -Problem: 3 >> Explain why an organism with a homozygous dominant genotype has the same phenotype as an organism with a heterozygous genotype?
Answer Preview: The dominant form of the trait always a…

, Chapter: 11 -Problem: 1 >> For one of the monohybrid crosses you performed in this Investigation, describe how to use the phenotype ratios to determine the percentage of offspring displaying each trait?
Answer Preview: The percentage of offspring displaying each trait is d…

, Chapter: 12 -Problem: 6 >> Hemophilia, a blood disorder in humans, results from a sex linked recessive allele. Suppose that a daughter of a mother without the allele and a father with the allele marries a man with hemophilia. What is the probability that the daughter’s children will develop the disease? Describe how you determined the probability.
Answer Preview: There is a 50:50 chance that her offspring will have the disease. In other words, 50 p…

, Chapter: 12 -Problem: 3 >> Did you mate Drosophila in the laboratory or did you perform genetic crosses using Punnett squares first? Why?
Answer Preview: Compare and contrast the data you collected from the Punnett squares to the data you collected from …

, Chapter: 2 -Problem: 7 >> Could there be a food chain without herbivores and carnivores?
Answer Preview: Yes, there co…

, Chapter: 4 -Problem: 5 >> Compare the initial and final populations. What changes did you make to make to keep the fish and invertebrates alive?
Answer Preview: I only lost the anemone becaus…

, Chapter: 1 -Problem: 5 >> Discuss possible benefits and drawbacks of a transgenic organism such as Bt corn?
Answer Preview: Transgenic organisms are a benefit if they increase the y…

, Chapter: 6 -Problem: 1 >> What are the names of the species of invertebrates used in this experiment? Which of these species was the most tolerant of increased acidity in the aquarium? Which species were the least tolerant?
Answer Preview: The species include snail, sideswimmer, clam, crayfish, …

, Chapter: 2 -Problem: 3 >> Compare and contrast two of the ecosystems you studied. How is the energy conversion efficiency similar or different?
Answer Preview: In the pyramid of energy, the energy moves i…

, Chapter: 1 -Problem: 4 >> What might happen if ECB became resistant to Bt?
Answer Preview: Bt might no longer prove to be an effec…

, Chapter: 4 -Problem: 2 >> What changes did you make to your reef tank during the 12 weeks and why did you make them?
Answer Preview: I noticed that after I selected my fish, the tank began to grow algae. So, t…

, Chapter: 17 -Problem: 1 >> Describe the characteristics of the organism and the process you used to determine the identity of one of the organisms in this Exploration?
Answer Preview: The may describe that they examined the unknown bacteria under the microscope …

, Chapter: 12 -Problem: 1 >> Describe the phenotypes and genotypes of the parents that you chose on the Punnett squares?
Answer Preview: However, all of the possible phenotypes and ge…

, Chapter: 27 -Problem: 5 >> During the course of your experiment, did you obtain any blood pressure readings that were outside the normal range for the group being tested? What did you notice on the medical charts for these individuals that might explain their high readings?
Answer Preview: Yes, several blood pressure readings were obtained that were outside the norm…

, Chapter: 7 -Problem: 5 >> Enzymes function most efficiently at the temperature of a typical cell, which is 37°C. Increases or decreases in temperature can significantly lower the reaction rate. What does this suggest about the importance of temperature regulating mechanisms in organisms? Explain.
Answer Preview: They should reflect the fact tha…

, Chapter: 29 -Problem: 7 >> Why would you not expect to see tissue macrophages in a blood smear? Explain your answer.
Answer Preview: Macrophages are fo…

, Chapter: 5 -Problem: 3 >> On what day did the Paramecium caudatum population reach the carrying capacity of the environment when it was grown alone? How do you know?
Answer Preview: The Paramecium caudatum popula…

, Chapter: 12 -Problem: 7 >> Color blindness results from a sex-linked recessive allele. Determine the genotypes of the offspring that result from a cross between a color-blind male and a homozygous female who has normal vision. Describe how you determined the genotypes of the offspring?
Answer Preview: All daughters will have normal vision, but they will be carriers of the allele. …

, Chapter: 9 -Problem: 2 >> What happens to food energy during photosynthesis? During cellular respiration?
Answer Preview: Food energy is stored in chemi…

, Chapter: 26 -Problem: 3 >> Which muscles were able to contract under the greatest loads? What does this suggest about the role these muscles play in frog movement?
Answer Preview: The leg muscles (thigh and calf) were able to …

, Chapter: 4 -Problem: 3 >> What problems, if any, did you have with any of the fish or invertebrates in the reef tank?
Answer Preview: One anemone died becaus…

, Chapter: 13 -Problem: 4 >> Was the sequence a result of point or frame-shift mutation?
Answer Preview: The first sequence I b…

, Chapter: 7 -Problem: 1 >> Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases?
Answer Preview: The line graph plotting the increase in initial reaction rate with respect to increasing substrate …

, Chapter: 17 -Problem: 2 >> Suppose you found out that organism 3 might cause pneumonia. Would this additional information strengthen or weaken your hypothesis about the identity of the organism? Explain you answer.
Answer Preview: This information would stren…

, Chapter: 10 -Problem: 2 >> Which type of cancer shows the most aggressive growth? Explain.
Answer Preview: Ovarian cancer shows the most aggressi…

, Chapter: 23 -Problem: 8 >> What other evidence besides fossil bones might be useful in describing the behavior of a dinosaur?
Answer Preview: Fossil dinosaur foot prints and tracks can tell a…

, Chapter: 1 -Problem: 6 >> A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that a bushel contains about 90 000 kernels on average. What is the farmer’s estimate of yield in bushels/acre?
Answer Preview: Approximately 171 1 bushels per acre. To …

, Chapter: 23 -Problem: 5 >> Describe some features that dinosaurs share with modern living reptiles?
Answer Preview: Modern living reptiles and …

, Chapter: 9 -Problem: 1 >> What is the importance of the light and dark reactions in photosynthesis?
Answer Preview: During the light reactions of photosynthesi…

, Chapter: 13 -Problem: 3 >> What do you think will be the impact of this mutation? Why?
Answer Preview: The first sequence I built had a silent mu…

, Chapter: 1 -Problem: 1 >> Describe the effects of the ECB infestations you used. Were all corn varieties equally effective at controlling the ECB? How do you know?
Answer Preview: Depending upon the varieties of cor…

, Chapter: 23 -Problem: 2 >> Describe the steps you took to identify one of the dinosaurs from the fossil?
Answer Preview: They should describe how they compa…

, Chapter: 5 -Problem: 4 >> On what day did the Paramecium aurelia population reach the carrying capacity of the environment? How do you know?
Answer Preview: The Paramecium aurelia popula…

, Chapter: 21 -Problem: 1 >> Many species of arachnids are predators, but they have no teeth or jaws. How do they obtain nutrients from their prey?
Answer Preview: Spiders release digestive enzymes tha…

, Chapter: 5 -Problem: 7 >> Explain how this experiment demonstrates that no two species can occupy the same niche?
Answer Preview: The experiment demonstrates tha…

, Chapter: 16 -Problem: 1 >> Did either allele A or a disappear from the population you studied? Why or why not?
Answer Preview: Both allele frequencies approached zero in the five generati…

, Chapter: 12 -Problem: 2 >> Describe the offspring phenotype and genotype ratios that resulted from crossing the parents that you chose on the Punnett squares. Using these ratios, what percentage of offspring are white-eyed? What percentage of offspring are red-eyed?
Answer Preview: For example, if students chose to cross a red-eyed male …

, Chapter: 18 -Problem: 6 >> Why do you think the mouse was selected as a model organism for mammals? Explain your answer.
Answer Preview: The Mouse is used as a model organism because it is a relatively simple mamm…

, Chapter: 10 -Problem: 3 >> When studying cell division in tissue samples, scientists often calculate a mitotic index, which is the ratio of dividing cells to the total number of cells in the sample. Scientists often calculate the mitotic index to compare the growth rates of different types of tissue. Which type of tissue would have a higher mitotic index, normal tissue or cancerous tissue? Explain.
Answer Preview: Since cancerous tissue …

, Chapter: 25 -Problem: 1 >> What is the difference between a reflex behavior and instinctive behavior?
Answer Preview: Describe reflex behaviors and instinctive behaviors that hum…

, Chapter: 6 -Problem: 5 >> How do the data represented on the population bar graph compare to the data represented in the line graph titled Populations of Aquatic Invertebrates at Various pH Levels?
Answer Preview: The two graphs show similar information, but in different ways. The …

, Chapter: 27 -Problem: 2 >> How will you use the Investigation screen to test your hypothesis? What steps will you follow? What data will you record?
Answer Preview: To test either of the two hypotheses, first choose a group of men, aged 11-17. Measure t…

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