KA1: Producing New cells

Question 1

What is mitosis

Answer 1

The process of cell division

Question 2

How are new cells produced in the body

Answer 2

Mitosis

Question 3

What does mitosis involve

Answer 3

The doubking of chromosomes to produce new cells

Question 4

Where are chromosomes found

Answer 4

The nucleus

Question 5

How many chromosomes are in a diploid human cell

Answer 5

46

Question 6

What do diploids contain

Answer 6

2 matching sets of chromosomes which are replicated during mitosis

Question 7

What are the stages of mitosis

Answer 7

1: Interphase - The cell is a resting phase before mitosis. Individual chromosomes cannot be identified
2: Prophase - Chromosomes doublr to form chromatids held together by a centromere. They shorten and become visible
3: Metaphase - Chromosomes line up along the equator and are attached to spindle fibres
4: Anaphase - Spindle fibres shorten and pull the chromatids to opposite poles
5: Telophase - Nucleus and cell membrane divided forming 2 new cells with the sane chromosome complement

Question 8

What do sex cells have?

Answer 8

Half of an organisms DNA (1 set of chromosomes)

Question 9

What cells are haploid?

Answer 9

Sex cells (egg and sperm)

Question 10

What cells are haploid?

Answer 10

Sex cells (egg and sperm)

Question 11

How do parent cells divide?

Answer 11

Produce 2 new cells with the same number of chromosomes

Question 12

What is a parent cell?

Answer 12

A cell that is copied during mitosis

Question 13

What is in the centre of a chromsome

Answer 13

A centromere