A-LevelBiologyNucleic acids and protein synthesisMay/June 2017Paper 1 Q201 Mark

Electron micrographs may show large numbers of ribosomes forming chains along mRNA molecules. What is the advantage of this arrangement, compared to when ribosomes appear singly on the mRNA?

Q: What topic does this question test?

This question tests Nucleic acids and protein synthesis in A-Level Biology (syllabus code 9700). It is worth 1 mark.

ADifferent polypeptides can be produced simultaneously.

BFewer tRNA molecules are required to translate the polypeptide.

CLarge polypeptide chains can be produced.

DPolypeptides can be produced more rapidly.

✓ Correct Answer

The correct answer is D: Polypeptides can be produced more rapidly.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Biology Question

Topic

This multiple-choice question tests Nucleic acids and protein synthesis in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology May/June 2017 examination, Paper 1 Variant 2.

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