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

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Question 5

A gene codes for collagen, a protein that forms long, strong fibres. Two versions of this gene each have one base removed. In version X, the removed base is near the beginning of the gene; in version Y, it is near the end.

Suggest which version is likely to have the greater effect on the collagen protein, and why.

[2]
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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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