Skip to main content
A-LevelBiologyNucleic acids and protein synthesisFeb/Mar 2021Paper 1 Q211 Mark

A piece of double-stranded DNA containing 12 × 10³ nucleotides is transcribed and translated to produce a single polypeptide. What is the maximum number of amino acids in this polypeptide?

A6 × 10³
B4 × 10³
C2 × 10³
D1 × 10³

✓ Correct Answer

The correct answer is C. This question tests the candidate's understanding of nucleic acids and protein synthesis within the Biologysyllabus. The examiner's mark scheme requires...

📋 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...

🔒

Unlock the Examiner's Answer

Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.

Sign Up Free to Unlock →

Join thousands of Cambridge students already using Oracle Prep

About This A-Level Biology Question

This multiple-choice question appeared in the Cambridge A-Level Biology (9700) Feb/Mar 2021 examination, Paper 1 Variant 2. It tests the topic of Nucleic acids and protein synthesis and is worth 1 mark.

Oracle Prep provides AI-powered practice for all Cambridge O-Level and A-Level subjects. Our platform includes topic predictions with 87.7% accuracy, AI essay grading, and a comprehensive question bank spanning 25 years of past papers.

© 2026 Oracle Prep — The AI-Powered Cambridge Exam Engine