Mod:1 Lesson 3: What is the cell cycle?

Question 1

Match each of the following events with its corresponding phase of the cell cycle.
____ DNA is being replicated
____ chemically quiet period between events S and M
____ cell is not actively progressing through the cell cycle after mitosis
____ cell is dividing
____ chemically quiet period just after cell is produced from parent cell

A. G0
B. G1
C. G2
D. S
E. M

Answer 1

Match each of the following events with its corresponding phase of the cell cycle.
D. S____ DNA is being replicated

C. G2____ chemically quiet period between events S and M

A. G0____ cell is not actively progressing through the cell cycle after mitosis

E. M____ cell is dividing

B. G1____ chemically quiet period just after cell is produced from parent cell

Question 2

Briefly describe the process of mitosis:

Answer 2

a single cell divides to form two identical cells, each having a complete set of chromosomes

Question 3

Match each of the following events with its corresponding stage of mitosis.
____ composed of the G1, S, and G2 phases of the cell cycle

____ chromosomes align along central axis, and spindle fibers attach to their centromeres

____ chromosomes contract and become visible within the nucleus

____ sets of chromosomes separate and move along spindle to opposite sides of the cell; furrow begins to form

____ nuclear membrane forms around each set of chromosomes

A. anaphase
B. interphase
C. metaphase
D. prophase
E. telophase

Answer 3

Match each of the following events with its corresponding stage of mitosis.

B. interphase____ composed of the G1, S, and G2 phases of the cell cycle

C. metaphase____ chromosomes align along central axis, and spindle fibers attach to their centromeres

D. prophase____ chromosomes contract and become visible within the nucleus

A. anaphase____ sets of chromosomes separate and move along spindle to opposite sides of the cell; furrow begins to form

E. telophase____ nuclear membrane forms around each set of chromosomes

Question 4

True / False - Flow cytometry can be used to measure the amount of DNA in cells.

Answer 4

True

Question 5

True / False - Cancer cells do not follow the same cell cycle phases as normal cells do.

Answer 5

False

Question 6

True / False - Cycle-specific chemotherapeutic agents are significantly more toxic to resting cells than they are to proliferating cells.

Answer 6

False