C1L5: Chromosomes & Mitosis

Question 1

Mitosis is also known as the…?

Answer 1

Cell Cycle

Question 2

Gene code for proteins? (big to small)

Answer 2

Cell -> Nucleus -> Chromosome -> DNA -> Gene

Question 3

Describe the process of mitosis?

Answer 3

1. DNA replicates to form X chromosomes
2. Sub-cellular structures divide
3. Nucleus disappears, chromosomes line up in centre of cell
4. Arms of chromosomes pulled to opposite ends
5. New nucleus formed around chromosomes
6. Cytoplasm divides leaving 2 separate daughter cells

Question 4

Why does mitosis occur?

Answer 4

• growth
• repair of tissue
• replace cells

Question 5

Why does the length of the cell cycle vary in different tissue?

Answer 5

Different replacement rates