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1.2 What happens in cells (and what do cells need)?

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Question 14

Scientists sequence a short section of double-stranded DNA from a mushroom. In each pair of sequences below, bases in the same position lie opposite each other.

Which pair of sequences could be the two strands of this section of DNA?

[1]
A

TCAGGATC paired with AGTCCTAG

B

ACGGTTCA paired with UGCCAAGU

C

CTTAGCGA paired with CTTAGCGA

D

GATTCAGC paired with AGCCTGAT

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1.2 What happens in cells (and what do cells need)? Questions

  1. GCSE
  2. /Biology
  3. /1.2 What happens in cells (and what do cells need)?

184 exam-style questions on OCR GCSE Biology 1.2 What happens in cells (and what do cells need)?, covering 1.2.1 Structure of DNA, 1.2.2 Nucleotides and complementary bases, 1.2.3 Protein synthesis, 1.2.4 DNA structure and the proteins made, 1.2.5 Investigating enzymatic reactions, and 1.2.6 Mechanism of enzyme action. Each one has a worked solution and a mark scheme showing where the marks go.

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