GCE O-Level · Science (Chemistry, Biology) (5088)

Molecular Genetics: Practice Questions

5 multiple-choice questions marked as you go, and 2 written questions with worked solutions. All on Molecular Genetics.

7 questions10 marksFree, no account

Question 1

1 mark

Which of the following are the three components that make up a single nucleotide in DNA?

Question 2

1 mark

Which of the following best describes the function of a gene?

Question 3

1 mark

DNA carries a genetic code that is essential for the cell to perform which of the following processes?

Question 4

1 mark

If a DNA strand has the base sequence A-G-T-C, what would be the sequence on the complementary strand?

Question 5

1 mark

Which of the following describes the relationship between a gene and a polypeptide?

Question 6

2 marks

State the rule of complementary base pairing between the four different nitrogenous bases found in a DNA molecule.

Write your answer out first, then check it against the worked solution.

Question 7

3 marks

(a) State the three components that make up a single DNA nucleotide.

(b) Describe the structure of a DNA molecule with reference to the arrangement of nucleotides and the rule of complementary base pairing.

Write your answer out first, then check it against the worked solution.

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