Mitosis

Question 1

Mitosis is important in the life of an organism. Give two reasons why.

Answer 1

• It enables repair/replacement of damaged or dead cells.
• Enables growth through increasing cell number
• Produces genetically identical daughter cells
• Allows for asexual reproduction/cloning

Question 2

A biologist used a microscope to investigate plant tissue where some of the cells were dividing by mitosis. She examined 200 cells and counted the number of cells in interphase and in each stage of mitosis.
Explain why the biologist chose to examine 200 cells.

Answer 2

There is a large sample so it is likely to be more representative.

Question 3

Cells lining the human intestine complete the cell cycle in a short time. Explain the advantage of these cells completing the cell cycle in a short time.

Answer 3

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