Mouse cells were grown in a dish containing a growth medium. Radioactively labelled amino acids were added to the growth medium. The table shows the time taken for the radioactively labelled amino acids to appear in three different organelles, R, S and T. [Table with columns 'organelle' and 'time taken for radioactivity to appear/min' and rows R: 2, S: 9, T: 35] Which row correctly identifies the organelles?
✓ Correct Answer
The correct answer is C: R: rough endoplasmic reticulum, S: Golgi body, T: lysosome
📋 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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