Cell Cycle

Question 1

G1 phase

Answer 1

G1 is the first growth phase. This is the phase in which most active cells live and function. The cell grows in size considerably during G1.

Question 2

M Phase

Answer 2

Mitosis is often called “M Phase.”

Question 3

G0 Phase

Answer 3

Cells that enter the G0 phase become “non-proliferative,” meaning they are not actively dividing and may not divide in the future. This is sometimes called “rest phase.” Many full-differentiated eukaryotic neurons remain in this phase indefinitely. You may hear this state referred to as “quiescent”—which means stable, not changing, and unlikely to change.

Question 4

S Phase

Answer 4

During S phase the DNA is replicated

Question 5

G2 Phase

Answer 5

The G2 phase follows S phase and features continued cell growth and high metabolic activity, especially the production of microtubules in preparation for mitosis.

Question 6

chromosomes before replication

Answer 6

46

Question 7

chromosomes after replication

Answer 7

46

Question 8

chromosomes during interphase

Answer 8

46

Question 9

chromosomes before S-phase

Answer 9

46

Question 10

chromosomes after S-phase

Answer 10

46

Question 11

chromsomes in a diploid cell

Answer 11

46

Question 12

chromosomes in a haploid cell

Answer 12

23

Question 13

apoptosis

Answer 13

Programmed cell death featuring autolysis

Question 14

what can cause apoptosis

Answer 14

cell exposed to extreme heat, radiation, viral infection, DNA damage, or just removal of healthy unwanted cells