Cell Division

Question 1

What are Chromosomes made from?

Answer 1

Chromosomes are made from molecules of DNA and can be found in the nucleus of a cell.

Each chromosome carries a large number of genes. Chromosomes are typically found in pairs in body cells.

Question 2

Body cells have __ as many chromosomes as sex cells.

Answer 2

2x

Question 3

What does mitosis allow?

Answer 3

Allows for the growth, repair and asexual reproduction of cells.

Question 4

What happens during the initial growth stage?

Answer 4

• Extra ribosomes, mitochondria and other sub-cellular structures are produced.
• The cell’s chromosomes (which are made of DNA) are replicated so that there are two sets of the cell’s chromosomes.

Question 5

How does the nucleus divide into two during mitosis?

Answer 5

The two sets of chromosomes are pulled to opposite ends of the cell. Then, the nucleus divides into two.

Question 6

What is the final step of mitosis?

Answer 6

• The cytoplasm and cell membranes are divided resulting in the production of two identical cells.