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Cellular control

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Question 8

Which of the following processes describe control of gene expression at the post-transcriptional level?

  1. The binding of transcription factors to specific promoter regions to facilitate the recruitment of RNA polymerase.
  2. Alternative splicing of pre-mRNA molecules to produce different mature mRNAs from the same gene.
  3. Nucleotide substitution or editing within a transcribed mRNA molecule prior to translation.
A

1, 2 and 3

B

Only 1 and 2

C

Only 2 and 3

D

Only 2

Markscheme

Cellular control Questions

  1. A Level
  2. /Biology
  3. /Cellular control

30 exam-style questions on OCR A A Level Biology Cellular control. Each one has a worked solution and a mark scheme showing where the marks go.

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