Cell cycle

Question 1

Interphase

Answer 1

The part of the cell cycle where growth and DNA replication take place but no cell division.

Question 2

What are the three stages of interphase?

Answer 2

G1 (Gap 1- growth phase 1)
S phase (DNA replication)
G2 (Gap 2- growth phase 2)

Question 3

What is the longest phase in the cell cycle?

Answer 3

G 1

Question 4

What happens in G1?

Answer 4

• Cell recovers from mitosis
• Normal metabolic processes are happening
• Cell making nucleotides for DNA replication

Question 5

What happens in S phase?

Answer 5

DNA replication

Question 6

What is endoreplication?

Answer 6

S phase happens repeatedly without cell division resulting in multiple cells that are connected by the centromere.

The cell ends up with too much DNA at this point

Question 7

What is gene amplification?

Answer 7

Where certain genes in the cell are amplified as their regular amount might be insufficient for normal cell function.

Question 8

What is Gap 2?

Answer 8

The cell prepares for mitosis by making spindle fibers by synthesising a-tubulin and B-tubulin

Nuclear envelope needs to be broken down

Question 9

How is Mitosis divided?

Answer 9

Karyokinesis

Cytokinesis

Question 10

What are the two types of karyokinesis?

Answer 10

Mitosis:duplication
Meiosis: reduction