A-LevelBiologyCell structureOct/Nov 2015Paper 1 Q41 Mark

Lysosomes have a variety of different shapes and sizes, making them difficult to identify. What describes a lysosome?

Q: What topic does this question test?

This question tests Cell structure in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Avesicle containing enzymes, enclosed by a double membrane, that is budded off the endoplasmic reticulum

Bvesicle containing hydrolytic enzymes and surrounded by a single membrane, found only in phagocytes

Cvesicle enclosed by a single membrane, containing several different hydrolytic enzymes that may act inside or outside the cell

Dvesicle surrounded by a double membrane, containing enzymes which can hydrolyse damaged organelles in a cell

✓ Correct Answer

The correct answer is C: vesicle enclosed by a single membrane, containing several different hydrolytic enzymes that may act inside or outside the cell

📋 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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About This A-Level Biology Question

Topic

This multiple-choice question tests Cell structure in A-Level Biology (syllabus code 9700). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Biology Oct/Nov 2015 examination, Paper 1 Variant 2.

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