A-LevelBiologyEnzymesOct/Nov 2015Paper 1 Q121 Mark
Which statements describe some enzyme actions? 1 Enzymes hold reacting molecules in such a way that their reactive groups are brought close together. 2 In an enzyme-catalysed reaction, more molecules have sufficient energy to react than in the absence of the enzyme. 3 Reactions catalysed by enzymes take place at a lower temperature than they would without the enzyme.
A1, 2 and 3
B1 and 2 only
C1 and 3 only
D2 and 3 only
✓ 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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