Bio 156, Exam 2 Questions and Guide Answers
100% Verified Graded A+
1. Cell division
Answer: Lesson 7: Chapters 7 (Sections 7.1 - 7.4) and 8 (Sections 8.1 - 8.4)
2. During the G2 phase of the cell cycle, cells make proteins needed for cell division
3. Division by mitosis produces two cellular descendants, each with half the
chromosome number of the parent.
Answer: false Each descendant has the same number of chromosomes
as the parent.
4. Sister chromatids are identical.
Answer: true
5. Which of the following body processes requires mitosis?
a. Sexual reproduction
b. Metabolism
c. Wound repair
,d. Protein synthesis
Answer: c. Wound repair
6. Which of the following is not a purpose of cell cycle checkpoints?
a. Ensure that the cell's DNA has been copied completely
b. Ensure that the cell's DNA has not been damaged
c. Ensure that enough nutrients are available to support division
d. Ensure that cells have enough RNA for protein synthesis
Answer: d. Ensure that cells have
enough RNA for protein synthesis
7. Which of the following is the correct order for the stages of mitosis?
a. Prophase, anaphase, metaphase, telophase
b. Prophase, metaphase, anaphase, telophase
c. Telophase, anaphase, metaphase, prophase
d. Anaphase, prophase, metaphase, telophase
Answer: b. Prophase, metaphase, anaphase,
telophase
8. connect the centrosomes to the chromosomes.
Answer: microtubules
9. During anaphase, chromosomes arrive at opposite spindle poles, decon-dense,
, and become enclosed by a new nuclear envelope.
Answer: false
10. The mechanism of cytoplasmic division is called
Answer: cytokinesis
11. Which of the following forms the cleavage furrow?
a. Contractile ring
b. Sister chromatids
c. Fusion of nuclear membranes
d. Vesicles along the plane of division
Answer: a. Contractile ring
12. During telophase in plant cells, vesicles at the plane of division start to fuse into a flat
cell plate.
Answer: true
13. DNA replication occurs during which stage?
Answer: interphase
14. Mitosis is the mechanism of nuclear division, whereas cytokinesis involves the
division of the cytoplasm.
Answer:
15. What is the role of proto-oncogenes?
100% Verified Graded A+
1. Cell division
Answer: Lesson 7: Chapters 7 (Sections 7.1 - 7.4) and 8 (Sections 8.1 - 8.4)
2. During the G2 phase of the cell cycle, cells make proteins needed for cell division
3. Division by mitosis produces two cellular descendants, each with half the
chromosome number of the parent.
Answer: false Each descendant has the same number of chromosomes
as the parent.
4. Sister chromatids are identical.
Answer: true
5. Which of the following body processes requires mitosis?
a. Sexual reproduction
b. Metabolism
c. Wound repair
,d. Protein synthesis
Answer: c. Wound repair
6. Which of the following is not a purpose of cell cycle checkpoints?
a. Ensure that the cell's DNA has been copied completely
b. Ensure that the cell's DNA has not been damaged
c. Ensure that enough nutrients are available to support division
d. Ensure that cells have enough RNA for protein synthesis
Answer: d. Ensure that cells have
enough RNA for protein synthesis
7. Which of the following is the correct order for the stages of mitosis?
a. Prophase, anaphase, metaphase, telophase
b. Prophase, metaphase, anaphase, telophase
c. Telophase, anaphase, metaphase, prophase
d. Anaphase, prophase, metaphase, telophase
Answer: b. Prophase, metaphase, anaphase,
telophase
8. connect the centrosomes to the chromosomes.
Answer: microtubules
9. During anaphase, chromosomes arrive at opposite spindle poles, decon-dense,
, and become enclosed by a new nuclear envelope.
Answer: false
10. The mechanism of cytoplasmic division is called
Answer: cytokinesis
11. Which of the following forms the cleavage furrow?
a. Contractile ring
b. Sister chromatids
c. Fusion of nuclear membranes
d. Vesicles along the plane of division
Answer: a. Contractile ring
12. During telophase in plant cells, vesicles at the plane of division start to fuse into a flat
cell plate.
Answer: true
13. DNA replication occurs during which stage?
Answer: interphase
14. Mitosis is the mechanism of nuclear division, whereas cytokinesis involves the
division of the cytoplasm.
Answer:
15. What is the role of proto-oncogenes?
