Unit #2 Cell Cycle and Cancer

Question 1

Stages of Interphase

Answer 1

G1, S, and G2

Question 2

Phase in cell cycle that is maintained when a cell does not divide

Answer 2

G0

Question 3

2 reasons for cell division

Answer 3

DNA overload and replacing damaged cells

Question 4

What happens as a cell grows larger?

Answer 4

The surface area to volume decreases, making the entry and use of necessary nutrients and proteins more difficult.

Question 5

Phase in M-phase

Answer 5

Mitosis and cytokinesis

Question 6

What happens in cytokinesis?

Answer 6

Cell membrane between daughter cells fully separates.

Question 7

What happens after cytokinesis in the cell cycle?

Answer 7

Daughter cells enter the G1 phase

Question 8

Histones

Answer 8

Proteins that DNA coils around in chromosomes

Question 9

Nucleosomes

Answer 9

Packs of 8 or 9 histones that the DNA also wraps around

Question 10

Anaphase

Answer 10

Sister chromatids separate and move along spindle fibers, reach opposite poles of cell

Question 10

Prophase

Answer 10

Nuclear envelope breaks down and nucleolus disappears, chromatin condenses into chromosomes, spindle fibers form

Question 11

Metaphase

Answer 11

Spindle fibers attach to each sister chromatid at centromere and chromosomes line up in middle of cell

Question 12

Telophase

Answer 12

Chromosomes become chromatin as two nuclear envelopes develop and a nucleolus becomes visible in both nuclei

Question 13

Period where cell duplicates DNA

Answer 13

S phase

Question 14

Period where cell prepares to divide

Answer 14

G2