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IB Biology SL D1.2.2 Hydrogen Bonding in Transcription Questions

In IB Biology SL D1.2.2, free RNA nucleotides align with the DNA template by complementary base pairing and hydrogen bonding. DNA adenine pairs with RNA uracil, while cytosine pairs with guanine.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Apply complementary base pairing during transcription, matching DNA adenine with RNA uracil and cytosine with guanine.

IB Biology SL D1.2.2 Hydrogen Bonding in Transcription Questions question 1

[Maximum number: 1]

The gene that codes for a particular polypeptide includes the base sequence shown.
GAGTACCCT
What is the base sequence of the mRNA molecule which is complementary to this sequence?

A

GAGTACCCT

B

CTCATGGGA

C

GUGTUCCCT

D

CUCAUGGGA

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