Cell Cycle Practice Test

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

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

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

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

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

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.

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

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

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

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

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

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?

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

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

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