Producing New Cells

Question 1

Diploid compliment

Answer 1

Animal cells contain two matching sets of chromosomes

Question 2

Mitosis

Answer 2

Provides growth and repair for all cells

Question 3

Describe the stages of mitosis

Answer 3

1, Replicated DNA is wound up into chromosomes. And the nuclear membrane dissolves and centrioles migrate to opposite poles
2, The chromosomes line up down the equator and from the centrioles spindle fibres attach to the centromeres
3, The spindle fibres contract and the and the sister chromosomes are split and taken to opposite poles where new nuclear membrane forms.
4, The plasma membrane pinches in until two cells are formed.

Question 4

What are stem cells

Answer 4

Unspecialised cells which can divide to make more unspecialised cells

Question 5

2 places where there are stem cells

Answer 5

Embryo

Bone marrow

Question 6

The number of chromosomes in a cell just before it divides

Answer 6

46 pairs

Question 7

Number of chromosomes in a non-mitosis cell

Answer 7

23 pairs