Chromosomes genes and DNA — Question Bank (Cambridge) — Cambridge IGCSE Physics 0625 Revision Notes & Topical Questions

Cambridge Lower Secondary Stage 9

Question 1
Paper Ref: 0610/22_Winter_2018_Q31

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 Cc 18 D 24

Options:
A
B
C
D
Correct Key: B

Question 2
Paper Ref: 0610/23_Summer_2017_Q33

Which statement about the sex chromosomes is correct?
oo BD
Men and women can inherit characteristics from genes carried on the X chromosome.
Men and women can inherit characteristics from genes carried on the Y chromosome.
Only men can inherit characteristics from genes carried on the X chromosome.
Only women can inherit characteristics from genes carried on the Y chromosome.

Options:
A
B
C
D
Correct Key: A

Question 3
Paper Ref: 0610/22_Summer_2020_Q30

What is a diploid nucleus?
A
B
C
D
a nucleus containing one set of chromosomes
a nucleus containing two sets of chromosomes
a nucleus with one double helix of DNA
a nucleus with two genes

Options:
A
B
C
D
Correct Key: B

Question 4
Paper Ref: 0610/23_Winter_2021_Q31

Which row is correct for the type of cell?
sets of
type of cell nucleus
chromosomes
body diploid
gamete diploid
gamete haploid
body haploid

Options:
A
B
C
D
Correct Key: A

Question 5
Paper Ref: 0610/23_Summer_2018_Q33

Which statement about blood groups in humans is correct?
A
B
c
D
They are determined by genes and the environment.
They are determined only by the environment.
They are determined only by genes.
They show continuous variation.

Options:
A
B
C
D
Correct Key: C

Question 6
Paper Ref: 0610/11_Summer_2022_Q33

Beak shape in birds is controlled by genes passed from the parent birds to their offspring.
What is this an example of?
selection
fertilisation
mitosis
0 0O wD PY
inheritance

Options:
A
B
C
D
Correct Key: D

Question 7
Paper Ref: 0610/21_Winter_2018_Q30

What is the role of MRNA?
A assembles amino acids into protein molecules
carries a copy of the gene out of the nucleus
controls cell function by controlling the production of proteins
0 9 DW
duplicates chromosomes before mitosis

Options:
A
B
C
D
Correct Key: B

Question 8
Paper Ref: 0610/22_Spring_2023_Q30

Which statement about the synthesis of a protein molecule in a cell is correct?
A
B
Cc
D
The gene coding for the protein moves from nucleus to cytoplasm.
Ribosomes assemble amino acids into DNA molecules.
mRNA remains in the nucleus.
The sequence of amino acids is determined by the sequence of bases in the MRNA.

Options:
A
B
C
D
Correct Key: D

Question 9
Paper Ref: 0610/22_Summer_2021_Q32

The Tasmanian devil is an animal with seven pairs of chromosomes in each body cell.
The diagram shows the chromosomes in a cell from a Tasmanian devil.
Which statement is correct?
A The cell is a haploid cell containing pairs of chromosomes.
The cell is a diploid cell with no pairs of chromosomes.
The cell is a haploid cell with no pairs of chromosomes.
0 OO DW
The cell is a diploid cell containing pairs of chromosomes.

Options:
A
B
C
D
Correct Key: C

Question 10
Paper Ref: 0610/22_Winter_2023_Q32

Why are cells in the pancreas the only body cells that produce insulin?
A
B
Cc
D
All of the genes in the nucleus of a cell in the pancreas are expressed.
Other body cells do not have the gene for insulin.
The cells in the pancreas have twice as many genes as the other body cells.
The gene for insulin is only expressed by cells in the pancreas.

Options:
A
B
C
D
Correct Key: D

Question 11
Paper Ref: 0610/23_Winter_2014_Q30

The diagram shows the chromosomes from one person.
1 2 3 4 5 6 7 8
MX XN WW NK 4a 64 ha HK
9 10 11 12 13 14 15 16
Ht XK WX ate Ads ad Ka
18 19
What can be deduced about the person who has these chromosomes?
A afemale with Down’s syndrome
B amale with Down’s syndrome
C anormal female
D
a normal male

Options:
A
B
C
D
Correct Key: B

Question 12
Paper Ref: 5129/12_Summer_2024_Q10

A cell with a nucleus containing 8 chromosomes undergoes meiosis.
What describes the cells produced by this process?
A
B
Cc
D
2 cells each containing 4 chromosomes
2 cells each containing 8 chromosomes
4 cells each containing 4 chromosomes
4 cells each containing 8 chromosomes

Options:
A
B
C
D
Correct Key: C

Question 13
Paper Ref: 0610/12_Spring_2024_Q36

Which human phenotype is caused by genes only?
A ABO blood group
body mass
foot size
Oo ©} W
height

Options:
A
B
C
D
Correct Key: A

Question 14
Paper Ref: 0610/21_Summer_2021_Q33

Which statement about meiosis is correct?
A Daughter cells are genetically identical.
B The chromosome number changes from haploid to diploid.
C_ itis used to produce body cells.
D It allows the formation of new combinations of chromosomes.

Options:
A
B
C
D
Correct Key: D

Question 15
Paper Ref: 0610/23_Summer_2026_Q40

Which feature of bacteria makes it possible for them to be used to produce
human insulin?
A
B
Cc
D
Bacteria possess plasmids.
Bacteria possess exactly the same DNA base sequences as humans.
Bacteria possess the same genes for insulin.
Bacteria possess the same number of chromosomes as humans.

Options:
A
B
C
D
Correct Key: A

Question 16
Paper Ref: 0610/21_Winter_2015_Q29

Which statement about the human sex chromosomes is correct?
0 9 DW
All boys have two Y chromosomes.
Everybody has at least one X chromosome.
Girls have a Y chromosome and an X chromosome.
Nobody has two X chromosomes.

Options:
A
B
C
D
Correct Key: B

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