Chapter 8 Standardized Test Prep Preview Multiple Choice Short Response Extended Response Chapter 8 Standardized Test Prep Multiple Choice 1. Which of the following statements about prokaryotic chromosomes is true? A. Prokaryotes have at least two chromosomes. B. Prokaryotic chromosomes consist of a circular DNA molecule. C. Prokaryotic chromosomes include histone and nonhistone proteins. D. Prokaryotic chromosomes are made of DNA wrapped tightly around histone proteins. Chapter 8 Standardized Test Prep Multiple Choice, continued 1. Which of the following statements about prokaryotic chromosomes is true? A. Prokaryotes have at least two chromosomes. B. Prokaryotic chromosomes consist of a circular DNA molecule. C. Prokaryotic chromosomes include histone and nonhistone proteins. D. Prokaryotic chromosomes are made of DNA wrapped tightly around histone proteins. Chapter 8 Standardized Test Prep Multiple Choice, continued 2. Crossing-over occurs during which process? F. mitosis G. meiosis I H. meiosis II J. interphase Chapter 8 Standardized Test Prep Multiple Choice, continued 2. Crossing-over occurs during which process? F. mitosis G. meiosis I H. meiosis II J. interphase Chapter 8 Standardized Test Prep Multiple Choice, continued The graph below shows the relative mass of DNA and chromosome number for a cell undergoing mitosis. Use the graph to answer the questions that follow. 3. In which phase of mitosis do chromatids separate and become individual chromosomes? A. prophase B. metaphase C. anaphase D. telophase/cytokinesis Chapter 8 Standardized Test Prep Multiple Choice, continued The graph below shows the relative mass of DNA and chromosome number for a cell undergoing mitosis. Use the graph to answer the questions that follow. 3. In which phase of mitosis do chromatids separate and become individual chromosomes? A. prophase B. metaphase C. anaphase D. telophase/cytokinesis Chapter 8 Standardized Test Prep Multiple Choice, continued The graph below shows the relative mass of DNA and chromosome number for a cell undergoing mitosis. Use the graph to answer the questions that follow. 4. What process occurs that leads to the decrease in the cell’s DNA mass? F. prophase G. metaphase H. anaphase J. telophase/cytokinesis Chapter 8 Standardized Test Prep Multiple Choice, continued The graph below shows the relative mass of DNA and chromosome number for a cell undergoing mitosis. Use the graph to answer the questions that follow. 4. What process occurs that leads to the decrease in the cell’s DNA mass? F. prophase G. metaphase H. anaphase J. telophase/cytokinesis Chapter 8 Standardized Test Prep Multiple Choice, continued 5. prokaryote : binary fission :: eukaryote : A. mitosis B. cytokinesis C. crossing-over D. genetic recombination Chapter 8 Standardized Test Prep Multiple Choice, continued 5. prokaryote : binary fission :: eukaryote : A. mitosis B. cytokinesis C. crossing-over D. genetic recombination Chapter 8 Standardized Test Prep Multiple Choice, continued The diagram below shows a model of cell division. Use the diagram to answer the question that follows. 6. Which type of cell division is shown in the diagram? F. mitosis G. meiosis H. binary fission J. sexual reproduction Chapter 8 Standardized Test Prep Multiple Choice, continued The diagram below shows a model of cell division. Use the diagram to answer the question that follows. 6. Which type of cell division is shown in the diagram? F. mitosis G. meiosis H. binary fission J. sexual reproduction Chapter 8 Standardized Test Prep Short Response Human cells are either diploid or haploid. All human cells with 46 chromosomes are diploid. Would a human cell with any 23 chromosomes be haploid? Explain your answer. Chapter 8 Standardized Test Prep Short Response, continued Human cells are either diploid or haploid. All human cells with 46 chromosomes are diploid. Would a human cell with any 23 chromosomes be haploid? Explain your answer. Answer: No, a haploid cell has one complete set of chromosomes, which in the case of humans is 23. Randomly having 23 chromosomes would not be considered haploid. Chapter 8 Standardized Test Prep Extended Response For a cell to function efficiently, its surface area must exceed that of its volume. Part A Explain how cell division maintains the relationship between surface area and volume. Part B How does a stable ratio between surface area and volume help maintain proper cell functioning? Chapter 8 Standardized Test Prep Extended Response, continued Answer: Part A The smaller the cell, the greater is the ratio of surface area to volume. Cell division makes one larger cell into two smaller cells. Part B By having a stable ratio between surface area and volume, cells are able to maintain homeostasis by taking in and getting rid of substances efficiently through osmosis and diffusion.