IB Biology HL D1.1.7 Hl Leading Vs Lagging Strand Questions

IB Biology HL D1.1.7 compares continuous leading-strand synthesis with discontinuous lagging-strand synthesis. The lagging strand is built as Okazaki fragments using repeated RNA primers.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify that the lagging strand uses repeated RNA primers to form Okazaki fragments.

IB Biology HL D1.1.7 Hl Leading Vs Lagging Strand Questions question 1

[Maximum number: 1]

What is a difference between the leading and lagging strands in DNA replication?

A

Fewer Okazaki fragments are produced on the leading strand.

B

Exons are only produced on the lagging strand.

C

More RNA primers are assembled on the lagging strand.

D

DNA nucleotides are linked 5′5^{\prime} to 3′3^{\prime} on the leading strand and 3′3^{\prime} to 5′5^{\prime} on the lagging strand.

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