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IB Biology HL 1.1.6 DNA polymerase directionality Question Bank

Practise IB Biology HL 1.1.6 by applying dna polymerase directionality concepts to exam-style questions.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • identify the relevant biological structure, process or evidence
  • apply the correct biological mechanism to the question
  • evaluate the result using data, adaptation or ecological reasoning

D1.1.6 (HL)—DNA polymerase directionality question 1

[Maximum number: 1]

How does DNA replicate?

A

The deoxyribose of a free nucleotide is linked to the phosphate of the last nucleotide in the chain.

B

The phosphate of a free nucleotide is linked to the deoxyribose of the last nucleotide in the chain.

C

Nucleotides are linked in a 3′3^{\prime} to 5′5^{\prime} direction and the new strands are anti-parallel to the template strands.

D

Nucleotides are linked in a 5′5^{\prime} to 3′3^{\prime} direction and the new strands are parallel to the template strands.

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