A-LevelBiologyCell structureOct/Nov 2013Paper 1 Q21 Mark
A student studied two photographs, at the same magnification, of a palisade mesophyll cell, one using a light microscope and the other using an electron microscope. The student observed: 1 the cisternae of the Golgi apparatus 2 the grana in the chloroplasts 3 the two membranes of the nuclear envelope 4 the vacuole enclosed by a tonoplast. Which features can only be seen because of the higher resolution of the electron microscope?
A1, 2 and 3 only
B1, 2 and 4 only
C1, 3 and 4 only
D2, 3 and 4 only
✓ Correct Answer
The correct answer is A. 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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