Unit 2 Topic 1 - Producing New Cells

Question 1

What is stage 1 of mitosis?

Answer 1

The parent cell’s neucleus contains single stranded uncoiled chromosomes, 2 sets from each parent - diploid

Question 2

What is stage 2 of mitosis?

Answer 2

Chromosomes shorten and thicken, coil up and become visible. Each chromosome replicates to form 2 identical chromatids and the neuclear membrane breaks down

Question 3

What is stage 3 of mitosis?

Answer 3

Chromosomes line up at the equator of the cell and spindle fibres attach to the chromatids

Question 4

What us stage 4 of mitosis?

Answer 4

Spindle fibres shorten to separate the chromatids pulling them to opposite poles

Question 5

What is stage 5 of mitosis?

Answer 5

The chromosomes gather at opposite ends of the cell and the cytoplasm starts to divide, new neuclear membranes start to form

Question 6

What is stage 6 of mitosis?

Answer 6

The cell splits and two new daughter cells are formed both diploid and identical to the parent cell

Question 7

What is mitosis needed for?

Answer 7

Growth and repair