CELL DIVISION 1- MITOSIS

Question 1

What does Replication in cells mean?

Answer 1

In an organism, cells will replicate (increase in number) -> happens through cell division. Before a cell divides DNA replication must occur.

Question 2

What are the two main types of Replication in Cells?

Answer 2

1. Mitosis
2. Meiosis

Question 3

What is the purpose of the replication process?

Answer 3

Ensures that the cell has double the amount of DNA required before the cell enters cell division.

Question 4

What is the function of Mitosis?

Answer 4

2 daughter cells are produced, genetically identical to the parent cell. It produces somatic cells -> diploid (2n). It contains 2 of each chromosome (1 of 23 from mum and dad)

Question 5

Why does mitosis occur in humans?

Answer 5

1. Growth
2. Repair and Healing
3. Tissue replacement (from aging cells)

Question 6

What are the stages of Mitosis?

Answer 6

• Interphase
  -Prophase
  -Metaphase
  -Anaphase
  -Telophase
  -Cytokinesis

Question 7

Interphase

Answer 7

Chromosomes aren’t visible
DNA replication is occuring

Question 8

Prophase

Answer 8

Chromosomes appear

Question 9

Metaphase

Answer 9

Chromosomes are lined up in the middle of the cell fibres

Question 10

Anaphase

Answer 10

Sister chromatids are pulled apart

Question 11

Telophase

Answer 11

Two new nuclei form around the chromosomes

Question 12

Cytokinesis

Answer 12

The cells split into 2 new identical daughter cells