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

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Question 28

During protein synthesis, genetic information is transferred from DNA to RNA. A section of a DNA template strand within a eukaryotic gene has the following base sequence:

C A T G T C G A A C T T \text{C \quad A \quad T \quad G \quad T \quad C \quad G \quad A \quad A \quad C \quad T \quad T} C A T G T C G A A C T T

What is the complementary sequence of the mRNA strand transcribed from this DNA template?

A
G T A C A G C T T G A A \text{G \quad T \quad A \quad C \quad A \quad G \quad C \quad T \quad T \quad G \quad A \quad A} G T A C A G C T T G A A
B
C A U G U C G A A C U U \text{C \quad A \quad U \quad G \quad U \quad C \quad G \quad A \quad A \quad C \quad U \quad U} C A U G U C G A A C U U
C
G U A C A G C U U G A A \text{G \quad U \quad A \quad C \quad A \quad G \quad C \quad U \quad U \quad G \quad A \quad A} G U A C A G C U U G A A
D
C A T G T C G A A C T T \text{C \quad A \quad T \quad G \quad T \quad C \quad G \quad A \quad A \quad C \quad T \quad T} C A T G T C G A A C T T
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)?

72 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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