Cell Cycle

Question 1

What are the 3 main parts of the cell cycle?

Answer 1

Interphase, Nuclear division, Cell division

Question 2

What 3 parts is interphase split into?

Answer 2

G1, S phase, G2

Question 3

What happens in G1?

Answer 3

RNA, enzymes and proteins are made for cell growth

Question 4

What happens in S phase?

Answer 4

DNA is made or replicated

Question 5

What happens in G2?

Answer 5

Synthesised DNA is checked and errors are repaired

Question 6

What is nuclear division?

Answer 6

The division of only stuff in the nucleus, either mitosis or meiosis (in gametes)

Question 7

What is cell division?

Answer 7

The division of everything in the cell, involving the process of cytokinesis

Question 8

What is cytokinesis?

Answer 8

The pinching of the cell

Question 9

What environmental factors affect the cell cycle?

Answer 9

Increased glucose, oxygen, temperature, phosphate, nucleotides

Question 10

How does increased glucose affect the cell cycle?

Answer 10

Increases respiration

Question 11

How does increased oxygen affect the cell cycle?

Answer 11

Increases respiration

Question 12

How does increased temperature affect the cell cycle?

Answer 12

Increases enzyme activity

Question 13

How does increased phosphate affect the cell cycle?

Answer 13

Increases ATP, DNA, RNA

Question 14

How does increased nucleotides affect the cell cycle?

Answer 14

Increases DNA synthesis

Question 15

What is the structure of a chromosome before S phase?

Answer 15

Contains a paternal and maternal chromosome in homologous pairs

Question 16

What is a paternal chromosome?

Answer 16

A chromosome from the father

Question 17

What is a maternal chromosome?

Answer 17

A chromosome from the mother

Question 18

What is a homologous pair?

Answer 18

A paternal and maternal chromosome that have the same function

Question 19

What is the structure of a chromosome after S phase?

Answer 19

Creates identical sister chromatids, joined at the centromere