1. CAMPBELL BIOLOGY IN FOCUS © 2014 Pearson Education, Inc. Urry Cain Wasserman Minorsky Jackson Reece 9 The Cell Cycle Questions prepared by Brad Stith, University of Colorado Denver Louise Paquin, McDaniel College

2. © 2014 Pearson Education, Inc. How many chromosomes are in the middle cell? A.1 B.2 C.4 D.8

3. © 2014 Pearson Education, Inc. How many chromosomes are in the middle cell? A.1 B.2 C.4 D.8

4. © 2014 Pearson Education, Inc. At what part of the cell cycle would you see a chromosome that looks like this? Give your reasons. A.G 1 B.G 2 C.M D.S

5. © 2014 Pearson Education, Inc. At what part of the cell cycle would you see a chromosome that looks like this? Give your reasons. A.G 1 B.G 2 C.M D.S

6. © 2014 Pearson Education, Inc. Although the chromosome begins M phase looking as shown below, when is it split? Give your reasons. A.prophase B.prometaphase C.metaphase D.anaphase E.telophase

7. © 2014 Pearson Education, Inc. Although the chromosome begins M phase looking as shown below, when is it split? Give your reasons. A.prophase B.prometaphase C.metaphase D.anaphase E.telophase

8. © 2014 Pearson Education, Inc. Which of the following best describes the kinetochore? A.a structure composed of several proteins that associate with the centromere region of a chromosome and that can bind to spindle microtubules B.the centromere region of a metaphase chromosome at which the DNA can bind with spindle proteins C.the array of vesicles that will form between two dividing nuclei and give rise to the metaphase plate D.the ring of actin microfilaments that will cause the appearance of the cleavage furrow E.the core of proteins that forms the cell plate in a dividing plant cell

9. © 2014 Pearson Education, Inc. Which of the following best describes the kinetochore? A.a structure composed of several proteins that associate with the centromere region of a chromosome and that can bind to spindle microtubules B.the centromere region of a metaphase chromosome at which the DNA can bind with spindle proteins C.the array of vesicles that will form between two dividing nuclei and give rise to the metaphase plate D.the ring of actin microfilaments that will cause the appearance of the cleavage furrow E.the core of proteins that forms the cell plate in a dividing plant cell

10. © 2014 Pearson Education, Inc. If you were to examine a sample of connective tissue cells from a small but adult mammal and a second sample from a fetus of the same species, in which would you expect to find more cells undergoing mitosis? Why?

11. © 2014 Pearson Education, Inc. A.Chromosomes are separated by microfilaments. B.Chromosomes are not separated. C.Microtubules shorten at the centrosome end. D.Microtubules shorten at the chromosome end. A new cell is found and separation of its chromosomes is examined. How would you interpret this result?

12. © 2014 Pearson Education, Inc. A.Chromosomes are separated by microfilaments. B.Chromosomes are not separated. C.Microtubules shorten at the centrosome end. D.Microtubules shorten at the chromosome end. A new cell is found and separation of its chromosomes is examined. How would you interpret this result?

13. © 2014 Pearson Education, Inc. A. What would you expect to happen if you fuse a cell in S with a cell in G 1 ? Why? B. What would you expect to happen to a nucleus from a G 1 cell if it is introduced into an enucleated M cell? Why?

14. © 2014 Pearson Education, Inc. What do the differences among the division of these cells demonstrate?

15. © 2014 Pearson Education, Inc. At which part of the cell cycle would you expect that a change in regulation could result in cancer? Provide a reason for your answer.