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

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Question 60

During protein synthesis in a eukaryotic cell, a ribosome translates a mature mRNA molecule to produce a polypeptide chain containing exactly 48 amino acids.

What is the minimum number of nucleotide bases in this mRNA coding region, measured from the first base of the start codon to the last base of the stop codon?

A

484848

B

144144144

C

147147147

D

150150150

Markscheme

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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