Cell division

Question 1

Chromosomes-

(definition)

Answer 1

Coiled up lengths of DNA molecules, which carry genes

Question 2

where are chromosomes found?

Answer 2

In the nucleus. They’re normally pairs in body cells

Question 3

Cell Cycle-

(definition)

Answer 3

a series of stages in which cells divide to produce new cells

Question 4

What three things does a cell do before it divides?

Answer 4

• Grows in size
• Increases the amount of sub-cellular structures
• Duplicates the DNA

Question 5

Mitosis-

(definition)

Answer 5

the stage of the cell cycle where the cell divides

Question 6

What is the first step of Mitosis?

Answer 6

The cells DNA is doubled

Question 7

What is the second step of Mitosis?

Answer 7

One set of chromosomes is pulled to each end of the cell

Question 8

What is the third step of mitosis?

Answer 8

The cytoplasm and cell membranes divide

Question 9

What is the forth and final step of mitosis?

Answer 9

Two cells are formed which are identical to each other and to the parent cell

Question 10

Describe the process of mitosis fully.

Answer 10

The cells DNA is doubled. One set of chromosomes is pulled to each end of the cell. The cell membrane and cytoplasm divide. Two cells are formed, which are identical to each other and to the parent cell.

Question 11

Mitosis allows _____________ _________ to ____ or _______ cells that have been damaged

Answer 11

Mitosis allows multicellular organisms to grow or replace cells that have been damaged