A-LevelBiologyEnzymesMay/June 2016Paper 1 Q101 Mark
In two investigations, the rate of an enzyme-catalysed reaction was measured in the presence of either a competitive inhibitor or a non-competitive inhibitor. What could be the effect of increasing the substrate concentration on each rate of reaction?
Awith competitive inhibitor: decreases, with non-competitive inhibitor: no change
Bwith competitive inhibitor: increases, with non-competitive inhibitor: decreases
Cwith competitive inhibitor: increases, with non-competitive inhibitor: no change
Dwith competitive inhibitor: no change, with non-competitive inhibitor: decreases
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of enzymes 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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