Chapter 6 - Cell Division

Question 1

What cells use mitosis to divide?

Answer 1

Normal body (somatic) cells (not a sex cell

Question 2

What cells use meiosis to divide?

Answer 2

Sex cell formations (gametes)

Question 3

What is a diploid cell?

Answer 3

When it makes a complete copy of both cells

Question 4

What is a haploid cell?

Answer 4

When it makes half of each cell

Question 5

What uses mitosis?

Answer 5

1. Mammals use it to grow

2. Bacteria use it to asexually reproduce (binary fission)

Question 6

What uses meiosis?

Answer 6

1. The production of sex cells (gametes)
2. Sex cells are haploid (have half the chromosome number)
3. Sex cells display variation (because of ‘crossing-over’)

Question 7

Examples of sex cells?

Answer 7

Animals: egg and sperm
Plants: ovule and pollen

Question 8

Properties of mitosis?

Answer 8

1. Somatic cells
2. Mitotically dividing within cells body
3. Used by organisms which reproduce asexually e.g. bacteria (binary fission)
4. Used by mammals to grow

Question 9

Properties of meiosis?

Answer 9

1. Gametes are sex cells
2. Half amount of chromosomes (haploid)
3. Humans are diploid
4. Sex cells display variation (crossing-over)