A-LevelBiologyEnzymesOct/Nov 2017Paper 1 Q161 Mark
Which statement about the effect of substrate concentration on the activity of an enzyme is correct?
AAbove a certain concentration of substrate an enzyme reaches its maximum rate of reaction.
BAt high concentration of competitive inhibitor increasing the substrate concentration has no effect.
CAt high substrate concentration a non-competitive inhibitor no longer affects the enzyme activity.
DThe higher the concentration of substrate the faster an enzyme can catalyse a reaction.
✓ Correct Answer
The correct answer is A. 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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