Cell devision

Question 1

Name a human cell that is haploid

Answer 1

Chromosome

Question 2

What is meant by diploid number of cells

Answer 2

Two copies of each chromosome

Question 3

State a function of mitosis in a single-celled organism

Answer 3

asexual reproduction

Question 4

State a function of mitosis in a multi-celled organism

Answer 4

growth and repair

Question 5

State one way in which mitosis differs from meiosis

Answer 5

mitosis- genetically identical cells

meiosis- genetically varied cells

Question 6

How many cells are formed when a cell divides by mitosis?

Answer 6

2 identical daughter cells

Question 7

List the stages of mitosis

Answer 7

1. Prophase
2. Metaphase
3. Anaphase
4. Telophase

Question 8

What term is used to describe a group of disorders of the body in which cells lose the normal regulation of mitosis?

Answer 8

Cancer

Question 9

Give one function of meiosis

Answer 9

1. allows chromosome number to be maintained

Question 10

name the 2 processes that involving DNA that take place in interphase

Answer 10

1. DNA replication

2. protein synthesis

Question 11

Functions of mitosis

Answer 11

1. Multiplication and reproduction

Question 12

Describe Prophase

Answer 12

1. Chromatin contracts
2. Chromosomes become visible
3. Nuclear membrane breaks down
4. Spindle fibres form

Question 13

Describe Metaphase

Answer 13

1. Chromosomes line up along the equator

2. spindle fibres attach centromere

Question 14

Describe Anaphase

Answer 14

1. Spindle fibres contract

2. chromosomes are pulled to each pole

Question 15

Describe Telophase

Answer 15

1. Chromosomes elongate
2. Spindle fibres break down
3. nuclear membrane forms
4. two new identical cells are formed

Question 16

Mitosis in animal cells

Answer 16

Cleavage furrow is formed

Question 17

Mitosis in plant cell

Answer 17

cell plate is formed

Question 18

What are cancer-causing agents?

Answer 18

Carcinogens

Question 19

2 differences between mitosis and meiosis

Answer 19

Mitosis- maintains the chromosome number
produces cells with identical genes
Meiosis- halves the chromosome number
genetic variation