Mitosis & the cell cycle

Question 1

What is the cell cycle?

Answer 1

The cell cycle is a series of steps that the cell has to undergo in order to divide.

Question 2

What is mitosis?

Answer 2

Mitosis is a step in the cell cycle - the stage when the cell divides.

Question 3

What happens during Stage 1 (Interphase)?

Answer 3

In this stage, the cell grows, organelles grow and increase in number, proteins are synthesized, DNA is replicated, and energy stores are increased.

Question 4

What occurs during Stage 2 (Mitosis)?

Answer 4

The chromosomes line up at the equator of the cell and cell fibres pull each chromosome of the ‘X’ to either side of the cell.

Question 5

What happens in Stage 3 (Cytokinesis)?

Answer 5

Two identical daughter cells form when the cytoplasm and cell membranes divide.

Question 6

Why is cell division by mitosis important in multicellular organisms?

Answer 6

It is important for growth, development, and replacing damaged cells.

Question 7

What role does mitosis play in asexual reproduction?

Answer 7

Mitosis is vital for asexual reproduction as it allows an organism to replicate its own cells to produce offspring.

Question 8

What are the three stages of the cell cycle?

Answer 8

1- Interphase
2- Mitosis
3-Cytokinesis