Paper 1: Mitosis

Question 1

What is mitosis?

Answer 1

A type of cell division that take places in several stages

Question 2

Where does mitosis occur?

Answer 2

In body cells

Question 3

What does mitosis produce?

Answer 3

2 identical daughter cells

Question 4

What are the stages of mitosis?

Answer 4

Interphase
Prophase
Metaphase
Anaphase
Telophase

Question 5

What happens during interphase?

Answer 5

Chromosomes start to become visible
DNA has already been copied

Question 6

What happens during prophase?

Answer 6

Chromosomes condense - each chromosome consists of 2 chromatids

Question 7

What happens during metaphase?

Answer 7

Nuclear membrane breaks down
Chromosomes line up along the middle of the cell

Question 8

What happens during anaphase?

Answer 8

Chromatids separate
one chromatid from each pair is pulled to each pole of the cell
Chromatids can now be called chromosomes

Question 9

What happens during telophase?

Answer 9

Spindle fibres disappear
New nuclear membrane forms round each group of chromosomes
Cell splits into 2 (cytokinesis)

Question 10

What stag is the cell in most of the time?

Answer 10

Interphase

Question 11

What is mitosis used for?

Answer 11

Growth, repair and asexual reproduction