Chapter Review
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1. The rate at which materials enter and leave the cell depends on the cell’s
a. Volume
b. Weight
c. Speciation
d. Surface area
2. Explain your reasoning for the answer for question 1.
3. As a cell’s size increases, what happens to the ratio of its surface area to its volume?
4. For a cell to divide successfully, the cell must first
a. Duplicate its genetic information
b. Decrease its volume
c. Increase its numbers of chromosomes
d. Decrease its numbers of organelles
5. In a changing environment, which organism have an advantage – those that reproduce asexually
or those that reproduce sexually? Explain your answer.
6. What are chromosomes?
7. Label the cell cycle phases: interphase, prophase, metaphase, anaphase, telophase, cytokinesis.
1.
2.
3.
4.
5.
6.
8. The nerve cells in the human system do not usually undergo mitosis. Based on this information,
explain why complete recovery from injuries to the nervous system usually do not occur.
9. What are cyclins and why are the important?
10. In the cell cycle, external regulatory proteins direct cells to
a. Speed up or slow down the cell cycle
b. Remain unchanged
c. Proceed and then stop the cell cycle
d. Grow uncontrollably
11. A cell will usually undergo apoptosis if the cell experiences DNA damage that could lead to a
tumor. Predict what may happen if a gene that controls apoptosis is damaged.
12. When some cells are removed from the center of a tissue culture, will new cells replace the cells
that were removed? Explain.
13. How do cancer cells differ from noncancerous cells?
14. Compare and contrast multipotent and pluripotent stem cells using a Venn diagram.
15. What is a blastocyst?
16. What is cell differentiation and how is it important to an organism’s development?
17. Chapter Mystery: Why is dedifferentiation of the
salamander’s limb cells necessary before
regeneration can occur?
18. Chapter Mystery: What type of cells do you think are
contained in the blastema? Explain.