Cell Cycle

Question 1

What does cell cycle mean

Answer 1

The life cycle of a cell

Question 2

When a cell is not dividing

Answer 2

The DNA is spread out in long strings then condenses into chromosomes

Question 3

How much chromosomes are in a human body

Answer 3

46 chromosomes [23 from mum/23 from dad]

Called diploid

Question 4

Mitosis/Cytokinesis

Answer 4

1) DNA condenses to form chromosomes

2) Chromosomes line up along the centre of the cells

3)Cell fibres pull the two arms of each chromosome to the opposite side (poles) of the cell

4) Cytokines takes place- the entire cell divided to form 2 identical daughter cells

These 2 daughter cells contribute to
Growth
Development
Repair

Question 5

What are the steps of the cell cycle

Answer 5

[1]Cellular growth - the cell gets larger and produces more sub-cellular structures, such as mitochondria and ribosomes.

[2]DNA replication - chromosomes duplicate, so that each consists of 2 arms (copies).

[3]More cell growth.

[4]Mitosis - the DNA divides into two.

[5]Cytokinesis - the cell divides into two.

Question 6

When a cell divides by mitosis how many are produced

Answer 6

2