Cell Cycle/Mitosis Review
Name: _________________________________
Date: __________
A) The diagram below shows six cells in various phases of the cell cycle. Note the cells are not arranged in the order in
which the cell cycle occurs. Use the diagram to answer questions 1-11.
________ 1. Cells A & F show an early and a late stage of the same phase of the cell cycle. What phase is it?
________ 2. Which cell is in metaphase?
________3. Which cell is in the first phase of M phase (mitosis)?
______________________________________________4. List the diagrams in order from first to last in the cell cycle.
5. In cell A, what structure is labeled X?
6. Are the cells depicted plant or animal cells? Explain your answer.
a) If it were the other type of cell what would be different in the diagrams?
7. What is the longest phase of the cell cycle?
8. Why is mitosis important?
9. Predict what would happen if an individual had faulty spindle fibers.
10. Predict what would happen if cytokinesis was skipped.
11. Sketch and label replicated chromosomes
Label: sister chromatids, centromere
B) Answer the following questions:
1. What is meant by the concept that cells go through a cell cycle?
2. Do all cells go through the cell cycle at the same rate or at the same frequency? Explain.
3. What is meant by the G0 phase.
4. What is the significance of cells that are permanently in G0 phase?
C) Below is a list of the phases of the cell cycle. Write a brief description of what occurs in each phase.
a. G1
b. S
c. G2
d. M
m. Why is the regulation of the cell cycle critical to normal function in the multicellular organism?
D) Answer the following:
1. What is the relationship between cancer and mitosis?
2. What is the role of the p53 gene?
3. What are proto-oncogenes?