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

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Question 15

Cells in the pancreas make the hormone insulin, which is a protein.

Which statement describes how the amino acids in insulin end up joined in the correct order?

[1]
A

Each tRNA copies part of the insulin gene in the nucleus and lines up the amino acids before they reach a ribosome.

B

The mRNA carries amino acids out of the nucleus, already joined in the order set by the insulin gene.

C

The ribosome reads the tRNA three bases at a time, and each mRNA delivers its amino acid only where it matches those bases.

D

The ribosome reads the mRNA three bases at a time, and each tRNA delivers its amino acid only where it matches those bases.

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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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