Question 7
[Maximum number: 1]
A mutation in which type of cell could be inherited?
A
Beta cell in the pancreas
B
T-cell in the lymph
C
Sperm cell in the testis
D
Skeletal muscle cell in the diaphragm
IB Biology SL D1.3 Mutation and gene editing Question Bank
Question 2
[Maximum number: 2]
Psammonobiotus balticus belongs to a group of protists (unicellular eukaryotic organisms) that have a shell surrounding most of the cell, which provides shelter from predators. The graph shows the frequency of varying shell lengths in a population of P. balticus.
Question 2(c)
(a)
Mutations may increase variation within a species. Compare and contrast substitution and insertion mutations.
[ 2 ]
Question 8
[Maximum number: 1]
What is a feature of mutations?
A
They occur randomly.
B
They only occur in germ cells.
C
The frequency cannot be increased by external factors.
D
They only occur in certain base sequences of the genome.
Question 12
[Maximum number: 1]
What is a gene mutation?
A
Failure of chromosome pairs to separate properly during cell division
B
Changes to genes caused by natural selection
C
Changes to the nucleotide sequence of the genetic material
D
Changes in karyotypes
Question 12
[Maximum number: 1]
How is a new allele produced?
A
Cloning
B
Mutation
C
Differentiation
D
Natural selection
Question 13
[Maximum number: 1]
What occurs during gene mutation?
A
Allele change
B
Crossing over
C
Non-disjunction
D
Evolution
Question 13
[Maximum number: 1]
One type of gene mutation involves a base substitution.
What are the consequences of the base substitutions in the two new sequences of DNA?
A
Both are mutations that would result in different polypeptides.
B
Sequence 2 would result in a changed polypeptide but sequence 1 would not.
C
All three DNA sequences would translate into the same polypeptide.
D
Only the original DNA and sequence 2 would translate into the same polypeptide.
Question 13
[Maximum number: 1]
Which of the following is the cause of sickle-cell anemia?
A
Tryptophan is replaced by leucine.
B
Leucine is replaced by valine.
C
Glutamic acid is replaced by valine.
D
Lysine is replaced by glutamic acid.
Question 13
[Maximum number: 1]
In some people, hemoglobin always contains the amino acid valine in place of a glutamic acid at one position in the protein. What is the cause of this?
A
An error in transcription of the hemoglobin gene
B
An error in translation of the mRNA
C
Lack of glutamic acid in the diet
D
A base substitution in the hemoglobin gene
Question 15
[Maximum number: 1]
The Cancer Council of New South Wales has stated that one in five cancer deaths are caused by smoking. How can smoking cause cancer?
A
20 % of smokers get cancer.
B
Cigarette smoke contains mutagenic chemicals.
C
Smoking reduces the rate of mitosis in cells.
D
Smoking is addictive.