Cells & Control

Question 1

Mitosis

Answer 1

For growth and repair (to make body cells)

Question 2

Meiosis

Answer 2

To make (sex) gametes

Question 3

Number of chromosomes after mitosis

Answer 3

Diploid (46)

Question 4

Number of chromosomes after meiosis

Answer 4

Haploid (23)

Question 5

Product of mitosis

Answer 5

2 genetically identical diploid daughter cells

Question 6

Interphase

Answer 6

DNA replicates; new organelles synthesised; chromosomes not clearly visible

Question 7

Prophase

Answer 7

Nuclear membrane breaks down; spindle fibres form

Question 8

Metaphase

Answer 8

Chromosomes line up in the middle of the cell and are attached to spindle fibres by their centromeres

Question 9

Anaphase

Answer 9

Centromere splits and chromatids separate to opposite poles of the cell

Question 10

Telophase

Answer 10

Chromosomes unravel; nuclear membrane reforms

Question 11

Cytokinesis

Answer 11

Cytoplasm splits to form 2 daughter cells

Question 12

Cancer

Answer 12

Uncontrollable cell division

Question 13

Cell division

Answer 13

When cell divides to produce new cells for growth and repair (animals and plants)

Question 14

Elongation

Answer 14

When cells become longer/ expand and so increases in size (only plants)

Question 15

Cell differentiation

Answer 15

Stem cells change so that it becomes specialised for a particular job eg egg cells (animals and plants)