Preview Chapter 11 Multiple Choice Short Response Extended Response

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Preview Chapter 11 Multiple Choice Short Response Extended Response Standardized Test Prep Preview Multiple Choice Short Response Extended Response

Chapter 11 Multiple Choice Standardized Test Prep Multiple Choice 1. Which of the following codes for a repressor protein? A. enhancer B. promoter C. regulator gene D. structural gene

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued 1. Which of the following codes for a repressor protein? A. enhancer B. promoter C. regulator gene D. structural gene

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued 2. Which component of an operon controls the advancement of RNA polymerase? F. exon G. operator H. promoter J. structural gene

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued 2. Which component of an operon controls the advancement of RNA polymerase? F. exon G. operator H. promoter J. structural gene

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued 3. Pre-mRNA contains which of the following? A. exons only B. introns only C. both introns and exons D. neither introns nor exons

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued 3. Pre-mRNA contains which of the following? A. exons only B. introns only C. both introns and exons D. neither introns nor exons

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued The graph below shows the number of cigarettes smoked per capita per year between 1920 and 2000 and the annual incidence of lung cancer among women. Use the graph to answer the question that follows. 4. What was the relationship between number of cigarettes smoked and incidence of lung cancer? F. There was no relationship between cigarette smoking and lung cancer. G. As the number of cigarettes smoked decreased, the incidence of lung cancer increased. H. As the number of cigarettes smoked increased, the incidence of lung cancer increased. J. As the number of cigarettes smoked increased, the incidence of lung cancer decreased.

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued The graph below shows the number of cigarettes smoked per capita per year between 1920 and 2000 and the annual incidence of lung cancer among women. Use the graph to answer the question that follows. 4. What was the relationship between number of cigarettes smoked and incidence of lung cancer? F. There was no relationship between cigarette smoking and lung cancer. G. As the number of cigarettes smoked decreased, the incidence of lung cancer increased. H. As the number of cigarettes smoked increased, the incidence of lung cancer increased. J. As the number of cigarettes smoked increased, the incidence of lung cancer decreased.

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued 5. skin : carcinoma :: blood-forming tissue : A. sarcoma B. leukemia C. lymphoma D. carcinogen

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued 5. skin : carcinoma :: blood-forming tissue : A. sarcoma B. leukemia C. lymphoma D. carcinogen

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued The diagram below shows how mutations in certain genes can lead to cancer. Use the diagram to answer the questions that follow. 6. What does X represent? F. mutagens G. carcinogens H. proto-oncogenes J. tumor-suppressor genes

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued The diagram below shows how mutations in certain genes can lead to cancer. Use the diagram to answer the questions that follow. 6. What does X represent? F. mutagens G. carcinogens H. proto-oncogenes J. tumor-suppressor genes

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued The diagram below shows how mutations in certain genes can lead to cancer. Use the diagram to answer the questions that follow. 7. What does Y represent? A. mutagens B. carcinogens C. proto-oncogenes D. tumor-suppressor genes

Multiple Choice, continued Chapter 11 Standardized Test Prep Multiple Choice, continued The diagram below shows how mutations in certain genes can lead to cancer. Use the diagram to answer the questions that follow. 7. What does Y represent? A. mutagens B. carcinogens C. proto-oncogenes D. tumor-suppressor genes

Chapter 11 Short Response Standardized Test Prep Short Response A biologist isolates mRNA from a mouse brain and liver and finds that the two types of mRNA differ. Can these results be correct, or has the biologist made an error? Explain your answer.

Short Response, continued Chapter 11 Standardized Test Prep Short Response, continued A biologist isolates mRNA from a mouse brain and liver and finds that the two types of mRNA differ. Can these results be correct, or has the biologist made an error? Explain your answer. Answer: The biologist did not make an error. The gene expression, and thus pre-mRNA processing is different, which results in different mRNA for different organs. This is done so that the specific proteins for that organ could be made.

Chapter 11 Extended Response Standardized Test Prep Extended Response Mutations may occur in gametes or in body cells. Part A In which cell type could a mutation cause genetic variation in a population? Part B Explain how genetic variation could result from a mutation in this cell type.

Extended Response, continued Chapter 11 Standardized Test Prep Extended Response, continued Answer: Part A Mutations that occur in the gametes can be a source of genetic variation in a population. Mutations in body cells are restricted to the individual and, unlike gametic mutations, cannot be passed on to future generations (with the exception of asexually reproducing species.) Part B Mutations arising in the gametes can be passed on to offspring during sexual reproduction and the formation of the zygote. The resulting offspring would be different (genetically) from the parent, and may show the resulting characteristics of the particular mutation.