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Cellular control

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Question 7

During the regulation of gene expression in eukaryotic cells, various molecular components interact to control transcription and translation.

Consider the following components:

  1. The estrogen receptor
  2. The promoter sequence of a target gene
  3. The RISC-associated endonuclease enzyme
  4. Single-stranded siRNA

Which of these components consist of polypeptides?

A

1, 2, 3 and 4

B

Only 2 and 4

C

Only 1 and 3

D

Only 1, 2 and 3

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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