Life Cycle Of A Cell

Question 1

Cycle divided into two main stages (2)

Answer 1

Interphase (components replicated)

Mitosis (cell divides in two)

Question 2

Interphase divided into two gap phases (2)

Answer 2

G1

G2

Question 3

Interphase divided into two gap phases and also _ phase

Answer 3

Synthesis (s)

Question 4

During first gap phase, cell produces (3)

Answer 4

Carbs

Lipids

Proteins

Question 5

Slow growing cells such as _ cells may remain in G1 phase for years

Answer 5

Liver

Question 6

Fast growing cells such as _ spend only 16-24 hours in G1 phase

Question 7

If cell not actively dividing, it exits the cell cycle during _

Answer 7

G1

(Then enters G0)

Question 8

Neurons and heart cells don’t divide and remain in G0, making _ of tissue slow and sometimes impossible (2)

Answer 8

Healing

Regeneration

Question 9

I’m S phase of interphase, chromosomes replicate from 46 to _

Answer 9

92

Question 10

Proteins also synthesized during S phase, including _

Answer 10

Spindle structures

(To pull chromosomes apart)

Question 11

In most human cells, s phase lasts between _ and _ hours

Answer 11

8

10

Question 12

Additional proteins synthesized in _ phase

Answer 12

G2

Question 13

Liver cells replacement rate:

Answer 13

12 mo

Question 14

Red blood cell replacement rate range:

Answer 14

80-120 days

Question 15

Skin cell replacement rate range:

Answer 15

14-28 days

Question 16

Intestinal mucosa replacement rate range:

Answer 16

3-5 days