Mitosis — Paper 2 · IGCSE Biology (9-1) 0970

31 The diagram shows a cell of an organism. The nucleus contains 12 chromosomes. After it divides by mitosis, how many chromosomes would be present in one of the daughter cells? A 6 B 12 C 18 D 24

1 marks

Answer: B

This question in 0970/22 Oct/Nov 2018

32 The diagram shows the chromosomes in the nucleus of a cell that divides by mitosis. Which diagram shows the chromosomes in the nucleus of one of the daughter cells produced? A B C D

1 marks

Answer: C

This question in 0970/21 May/June 2019

32 The diagram shows the chromosomes in the nucleus of a cell that divides by mitosis. Which diagram shows the chromosomes in the nucleus of one of the daughter cells produced? A B C D

1 marks

Answer: C

This question in 0970/22 May/June 2019

30 The diagram shows the cells of a mammalian embryo shortly after fertilisation. Which is the correct description of these cells? A gametes undergoing meiosis B gametes undergoing mitosis C stem cells undergoing meiosis D stem cells undergoing mitosis

1 marks

Answer: D

This question in 0970/22 Oct/Nov 2019

31 The diagram shows a diploid cell and alleles R and r on one pair of chromosomes. nucleus R r cytoplasm When this cell divides by mitosis, which daughter cells will be produced? chromosome number genotype A diploid heterozygous B diploid homozygous C haploid heterozygous D haploid homozygous

1 marks

Answer: A

This question in 0970/22 Oct/Nov 2019

32 When damaged tissues are repaired cells undergo division by A meiosis to produce genetically identical cells. B meiosis to produce genetically different cells. C mitosis to produce genetically identical cells. D mitosis to produce genetically different cells.

1 marks

Answer: C

This question in 0970/21 May/June 2020

31 Which statement about meiosis is correct? A At the end of meiosis a zygote has been produced. B During meiosis the haploid number is halved in the daughter cells. C Meiosis is reduction division in which diploid daughter cells are produced. D The parent cell contains twice as many chromosomes as each daughter cell.

1 marks

Answer: D

This question in 0970/22 May/June 2020

30 The diagrams show human nuclei and the number of chromosomes in each nucleus. Which diagram represents nuclear division of skin cells for growth and repair? A B C D 46 46 23 23 23 23 23 46 46 46 23 23

1 marks

Answer: B

This question in 0970/22 Oct/Nov 2020

30 A zygote has ten chromosomes in its nucleus. Which row shows the number of chromosomes in the cells of this species? body cells sperm cells embryo cells A 5 5 10 B 5 10 20 C 10 5 10 D 10 10 20

1 marks

Answer: C

This question in 0970/21 May/June 2021

33 Some statements about mitosis are listed. 1 Cells divide and produce new cells to repair damaged tissues. 2 Chromosomes are duplicated and the cell separates to form gametes. 3 Chromosomes are duplicated and the cell separates to form genetically identical cells. 4 Mitosis is used in asexual reproduction. Which statements are correct? A 1, 2 and 3 B 1, 3 and 4 C 2 and 4 D 3 and 4 only

1 marks

Answer: B

This question in 0970/22 May/June 2021

31 Which statement about a diploid human cell is correct? A There are 22 chromosomes and an X or a Y chromosome. B There are 22 pairs of chromosomes and two sex chromosomes. C There are 23 chromosomes. D There are 23 pairs of chromosomes and two sex chromosomes.

1 marks

Answer: B

This question in 0970/22 Oct/Nov 2021

32 The diagram shows the unspecialised cells of a mammalian embryo soon after fertilisation. What is the correct description of these cells? A embryo cells undergoing meiosis B gametes undergoing mitosis C stem cells undergoing mitosis D zygote undergoing meiosis

1 marks

Answer: C

This question in 0970/22 Oct/Nov 2022

28 Potatoes are stem tubers. A tuber can be placed in the ground to grow into another plant, which can grow many more tubers. 4 months The diploid number of the potato plant is 24. How many chromosomes will there be in the cells of the stem, the leaf and the pollen? stem leaf pollen A 24 24 12 B 24 12 48 C 48 12 24 D 48 48 12

1 marks

Answer: A

This question in 0970/21 May/June 2023

33 Which statement is correct? A Mitosis always produces offspring that are homozygous. B Mitosis produces cells that are genetically identical. C Mitosis produces gametes in animals. D Mitosis only produces haploid cells.

1 marks

Answer: B

This question in 0970/22 Oct/Nov 2023

32 Which word is used to describe stem cells? A gametes B haploid C homozygous D unspecialised

1 marks

Answer: D

This question in 0970/21 May/June 2024

35 What are correct statements about meiosis? produces involved in repair genetically of damaged identical cells tissues A yes yes B yes no C no yes D no no

1 marks

Answer: D

This question in 0970/21 May/June 2024

32 Which graph shows the mean mass of DNA per cell before, during and after mitosis? A B 8 8 7 7 mean mean mass 6 mass 6 of DNA of DNA 5 5 per per cell 4 cell 4 / arbitrary / arbitrary units 3 units 3 2 2 1 1 0 0 time time C D 8 8 7 7 mean mean mass 6 mass 6 of DNA of DNA 5 5 per per cell 4 cell 4 / arbitrary / arbitrary units 3 units 3 2 2 1 1 0 0 time time

1 marks

Answer: B

This question in 0970/22 Oct/Nov 2024

29 The diagram shows the chromosomes in the nucleus of a cell that divides by mitosis. Which diagram shows the chromosomes in the nucleus of one of the daughter cells produced? A B C D

1 marks

Answer: C

This question in 0970/21 May/June 2025

33 What are stem cells? A specialised cells that divide by meiosis to produce daughter cells B specialised cells that divide by mitosis to produce daughter cells C unspecialised cells that divide by meiosis to produce daughter cells D unspecialised cells that divide by mitosis to produce daughter cells

1 marks

Answer: D

This question in 0970/22 Oct/Nov 2025