DP Biology (first assessment 2025)

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Question 22N.1A.HL.TZ0.28

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1A.HL.TZ0.28
Level HL Paper 1A Time zone TZ0
Command term Question number 28 Adapted from N/A
28.
[Maximum mark: 1]
22N.1A.HL.TZ0.28

The diagram shows a ribosome and associated mRNA

 

Which of these events occurs first in translation?

A.  Small ribosomal subunit binds to mRNA.

B.  Large ribosomal subunit binds to mRNA.

C.  Initiator tRNA enters E site.

D.  Initiator tRNA enters A site.

[1]

Markscheme

A

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