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

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Question 11

A muscle cell is making a protein. Four consecutive amino acids in the protein are Glu–His–Trp–Pro.

The table gives the DNA triplets that code for these amino acids.

DNA tripletAmino acid coded for
CATHistidine (His)
CCGProline (Pro)
GAAGlutamic acid (Glu)
TGGTryptophan (Trp)

Which sequence of DNA bases codes for Glu–His–Trp–Pro?

[1]
A

GAACATTGGCCG

B

CCGTGGCATGAA

C

GAATGGCATCCG

D

CTTGTAACCGGC

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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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