10.1 Cell Cycle

Question 1

What is the steps of the cell cycle

Answer 1

G1, G0 if needed, S, G2, M (G1, S, and G2 are interphase)

Question 2

What happens at G1

Answer 2

The cell increases in size and prepares to replicate its DNA

Question 3

What is the purpose of G0

Answer 3

To stop cells that do pass the checkpoint from continuing the cell cycle.

Question 4

What happens at S

Answer 4

The cell Replicates its DNA

Question 5

What happens at G2

Answer 5

The cell continues to grow and prepares for division

Question 6

What happens at M

Answer 6

Mitosis continues and produces 2 daughter cells

Question 7

Stimulatory proteins

Answer 7

Growth factors, CDK-proteins, mitotic cyclins, cyclosome

Question 8

What are stimulatory proteins

Answer 8

Proteins that will help the cells through the process of the cell cycle

Question 9

Inhibitory proteins

Answer 9

p53, retinoblastoma protein (RBP), ataxia telangiectasia mutated (ATM), breast cancer 1, mitotic arrest deficient

Question 10

What are inhibitory proteins

Answer 10

Proteins that inactivate CDK-cyclins or prevent their activation

Question 11

What are proto-oncogenes

Answer 11

Mutated proto-oncogenes who increase stimulation.

Question 12

What are tumor suppressor genes

Answer 12

They cause a loss of inhibition. When on of the alleles is present suppressors only partially slow, When both are present suppressors wont be produced.