A-LevelBiologyNucleic acids and protein synthesisFeb/Mar 2016Paper 1 Q221 Mark
The table shows the mode of action of two antibacterial drugs that can affect the synthesis of proteins. If bacteria are treated with both drugs, what will be the immediate effects? 1 Transcription will stop, but faulty proteins may continue to be synthesised. 2 If translation has started, proteins may be faulty. 3 Translation will be inhibited. [Figure 22.1]
A1, 2 and 3
B1 and 2 only
C1 and 3 only
D2 and 3 only
✓ Correct Answer
The correct answer is B: 1 and 2 only
📋 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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