6.1 The Cell Cycle

Question 1

What happens during interphase?

Answer 1

1. DNA is replicated and checked in the nucleus
2. Protein synthesis occurs in the cytoplasm
3. Mitochondria grow and divide
4. Chloroplasts grow and divide
5. The cell undergoes it’s normal metabolic processes (some of these continue to occur through the lifetime of the cell e.g. respiration)

Question 2

What are the three stages of interphase?

Answer 2

G1
S
G2

Question 3

What happens in G1 of interphase?

Answer 3

1. The proteins from which organelles are synthesised are produced
2. Organelles replicate
3. The cell increases in size

Question 4

What happens in S of interphase?

Answer 4

The DNA is replicated in the nucleus

Question 5

What happens in G2

Answer 5

The cell continues to grow in size