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WorksheetsDNA Mutations
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
What is a mutation in the context of DNA?
a)
A change in the cell membrane
b)
A change in the protein structure
c)
A change in the RNA base sequence
d)
A change in the DNA base sequence
2.
What is the role of non-coding DNA in gene expression?
a)
Coding for proteins
b)
Producing energy for the cell
c)
Regulating whether genes are turned on or off
d)
Affecting cell division
3.
What is a gene?
a)
A section of DNA that codes for protein
b)
A type of cell
c)
A type of mutation
d)
A type of amino acid
4.
What is the consequence of a substitution mutation?
a)
Creating a new gene
b)
Doubling the number of bases in a sequence
c)
Deleting a section of DNA
d)
Changing the amino acid that a codon codes for
5.
What increases the risk of mutations?
a)
Carcinogens and certain types of radiation
b)
Sunlight exposure
c)
Vitamins and minerals
d)
Exercise and healthy diet
6.
What happens in an insertion mutation?
a)
An extra base is added to the DNA sequence
b)
A base is substituted for another
c)
The DNA sequence remains unchanged
d)
A base is deleted from the sequence
7.
How do mutations affect the sequence of amino acids?
a)
By changing the codons in DNA
b)
By changing the structure of proteins
c)
By increasing cell division
d)
By altering the cell membrane
8.
How do carcinogens and radiation increase the risk of mutations?
a)
By causing changes in the DNA base sequence
b)
By increasing cell division
c)
By promoting healthy cell growth
d)
By reducing DNA duplication
9.
Which type of mutation involves an extra base being inserted into the DNA sequence?
a)
Translocations
b)
Deletions
c)
Substitutions
d)
Insertions
10.
How do mutations affect protein function?
a)
By reducing gene expression
b)
By increasing cell division
c)
By changing the amino acid sequence
d)
By altering the cell structure
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