7.1 Study Guide

Question 1

G1 phase

Answer 1

A newly divided cell enters right after completing mitosis. The cell increases in size and prepares to replicate its DNA.

Question 2

S phase

Answer 2

The cell replicates its DNA at the end of the phase. The cell has two complete sets of chromosomes.

Question 3

G2 phase

Answer 3

The cell continues to grow and prepares for division

Question 4

G1 checkpoints

Answer 4

No DNA damage and has sufficient resources

Question 5

S checkpoints

Answer 5

No errors during DNA replication

Question 6

G2 checkpoints

Answer 6

DNA without damage, chromosome set complete, enough cell components.

Question 7

M checkpoints

Answer 7

All sister chromatids are attached to the miotic spindle

Question 8

What is the G0 phase

Answer 8

Where non-dividing fully differentiated cells in the body such as neurons and muscle cells go, and they never reenter the cycle.

Question 9

Why do cells divide

Answer 9

For growth and development, repair and renewal, and reproduction

Question 10

Are there any patterns between similar cancer genes

Answer 10

No, all cancer genes even the same ones are unique to only themselves.

Question 11

Both Alleles of a gene need to be mutated in order for cancer to occur

Answer 11

Tumor Supressor