1. Cell Cycle Practice Test

2. Question #1
Which of the following is NOT a reason why interphase is necessary?
It replicates DNA
It doubles everything so the cell can split into identical cells
It divides the cell
It makes proteins and organelles

3. Question #2 Which is NOT a reason why cells divide?
Decrease surface area: volume ratio
Be more efficient
Replace damaged cells
Grow

4. Question #3 When does DNA replication occur? Write in ALL that apply.
Between cell divisions
S phase
Interphase
Prophase

5. Question #4 Which strand is the leading strand? The one on the right
The one on the left
The one that runs 5’ to 3’ as DNA unwinds
The one that runs 3’ to 5’ as DNA unwinds

6. Question #5 What is the name of the enzyme that connects nucleotides?
Helicase
DNA polymerase
DNA ligase
Cyclin

7. Question #6 Which of the following is NOT true about mitosis?
It involves the destruction and formation of a nuclear membrane
It makes two cells
It makes two nuclei
It occurs during the M phase.

8. Question #7
Which of the following describes the stages of the M phase?
Mitosis
Interphase and Mitosis
Mitosis and Cytokinesis
DNA replication and Mitosis

9. Question #8 When do centrioles move to opposite ends of the cell?
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

10. Question #9
When the cell cycle ____ it is called cell cycle arrest and is always caused by _______.
stops; p53
restarts; proteins
stops; cyclins
restarts; cyclins

11. Question #10
Which of the following can occur after cell cycle arrest? Write in ALL that apply.
Apoptosis
Excision repair
Cancer

12. Question #11 During which stage are sister chromatids formed?
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

13. Question #12
If a cell has 12 chromosomes at the beginning of interphase, how many will it have at the end of each stage of the cell cycle?

14. G1:
G0: S:
G2:
Prophase:
Metaphase:
Anaphase:
Telophase:
Cytokinesis:

15. Answers
1. C 2. A 3. A, B, C 4. C 5. C 6. B C A
A, B
See next slide

16. Question #12 Answer G1: 12 G0: 12 S: 24 G2: 24 Prophase: 24
Metaphase: 24
Anaphase: 24
Telophase: 24
Cytokinesis:12