Cell Cycle

Question 1

What are the 4 stages of the cell cycle

Answer 1

Interphase
[G1
S
G2]

M Phase
[Mitosis
Cytokinesis]

Question 2

What happens in G1

Answer 2

Grow- the cell grows its cytoplasm and membrane, and creates new organelles and proteins needed for DNA synthesis (replication).

Question 3

What happens in S phase?

Answer 3

Synthesis- DNA duplicates to prepare for mitosis

Question 4

What happens in G2 Phase?

Answer 4

Prepare for Mitosis by rapid cell growth and protein synthesis of proteins needed for mitosis. It also duplicates some organelles needed for mitosis.

Question 5

What are the 5 stages of M phase?

Answer 5

Mitosis
[Prophase
Metaphase
Anaphase
Telophase]
Cytokinesis

Question 6

What happens in prophase?

Answer 6

In prophase the chromatin condenses into chromosomes with two sister chromatids. The nuclear membrane (envelope) dissolves. Centrioles begin moving to opposite sides of the cell.

Question 7

What happens in Metaphase?

Answer 7

Chromosomes line up along central line in cell. Centrioles shoot out spindle fibres.

Question 8

What happens in anaphase?

Answer 8

Spindle fibres pull individual daughter chromatids towards the centrioles.

Question 9

What happens in telophase?

Answer 9

Spindle fibres disappear and nucleus forms around each set of daughter chromosomes. Cleavage forms.

Question 10

What happen in cytokinesis?

Answer 10

Cytoplasm separates completely and two daughter cells are formed.