Chapter 10 Lesson 1

Question 1

What are the stages of the cell cycle?

Answer 1

G0, G1, G2, S (Synthesis), and M (Mitosis)

Question 2

When the cell cycle is complete, what are the three things that can happen to the daughter cells?

Answer 2

1) Divide

2) Differentiate

3) Die

Question 3

What three phases make up interphase in the cell cycle?

Answer 3

G1, G2, and S (Synthesis)

Question 4

What are some examples of stimulitory protiens?

Answer 4

• Growth Factors
• ACP/C
• CDK
• Cyclins
• Proto-oncogens

Question 5

What is an example of an inhibitory protien?

Answer 5

P53

Question 6

What is the role of stimulitory protiens?

Answer 6

Cause the cell to pass its progress through the cell at critical points

Question 7

What is the role of inhibitory protiens?

Answer 7

Cause the cell to stop its progress through the cell at critical points

Question 8

What do proto-oncogenes do?

Answer 8

Code for stimulating protiens

Question 9

What do tumor suppressor genes do?

Answer 9

Code for inhibitory protiens

Question 10

How can tumor suppressor genes cause cancer?

Answer 10

If both of your versions are switched off, for example in P53, if DNA is mutated then gene p53 stops division

Question 11

What requirements have to be met at the G1 checkpoint?

Answer 11

• No DNA damage
  -Sufficient resources

Question 12

What requirements have to be met at the G2 checkpoint?

Answer 12

• No DNA damage
• Chromosome set complete, enough cell components

Question 13

What requirements have to be met at the S (Synthesis) checkpoint?

Answer 13

• No errors during DNA replication

Question 14

What requirements have to be met at the M (Mitosis) checkpoint?

Answer 14

• All sister chromatids are attached to mitotic spindle