mitosis and the cell cycle

Question 1

What are the series of stages cells divide in called?

Answer 1

Cells divide in a series of stages called the cell cycle.

Question 2

What are the stages of the cell cycle?

Answer 2

Cell growth –> DNA synthesis –> Further growth occurs & DNA is checked for errors –> mitosis –> cytoplasm separates (2 cells formed) –> temp cell resting period or it stops dividing –> cell growth

Question 3

What happens during DNA synthesis?

Answer 3

chromosomes are now double stranded

Question 4

How do multi cellular organisms use mitosis?

Answer 4

To grow or replace cells that have been damaged

Question 5

What happens in the cell cycle before mitosis?

Answer 5

During the cell cycle the genetic material is doubled and then divided into two identical cells. Before a cell can divide it needs to grow and increase the number of sub-cellular structures such as ribosomes and mitochondria. The DNA replicates to form x shaped chromosomes which are 2 copies of the same chromosome..

Question 6

Mitosis

Question 7

1

Answer 7

The chromosomes line up at the centre of the cell and cell fibres pull them apart - the 2 arms of each chromosome go to opposite ends of the cell

Question 8

2

Answer 8

cell fibres pull them apart - the 2 arms of each chromosome go to opposite ends of the cell

Question 9

3

Answer 9

Membranes start to form around each of the set of chromosomes (nucleus starts to form)

Question 10

4

Answer 10

Cytoplasm and cell membrane divide - left with 2 identical daughter cells