B2.1 Cell division

Question 1

What are genes?

Answer 1

Small sections of your DNA that control a characteristic of your body

Question 2

How many pairs of chromosomes do you have?

Answer 2

23 pairs

Question 3

What is mitosis?

Answer 3

Process of producing two identical cells

Question 4

What is the purpose of mitosis?

Answer 4

For growth and development and replacement of worn out or damaged cells

Question 5

What is in stage 1 of the cell cyle?

Answer 5

Cell grows bigger and increases mass
Replicates their DNA to form 2 copies of each chromosome ready for cell division
Increase number of sub-cellular structure such as mitochondria - ready for the cell to divide

Question 6

What is in stage 2 of the cell cyle?

Answer 6

Mitosis : Where one set of chromosomes is pulled to each end of the dividing cell and the nucleus divides

Question 7

What is in the stage 3 of the cell cycle?

Answer 7

Cytoplasm and the cell membrane divide to form 2 identical daughter cells

Question 8

What are chromosomes?

Answer 8

Chromosomes are thin strands of DNA