A-LevelBiologyCell structureOct/Nov 2025Paper 1 Q41 Mark
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?
AR: Golgi body, S: lysosome, T: rough endoplasmic reticulum
BR: Golgi body, S: rough endoplasmic reticulum, T: lysosome
CR: rough endoplasmic reticulum, S: Golgi body, T: lysosome
DR: rough endoplasmic reticulum, S: lysosome, T: Golgi body
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of cell structure 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...
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