A-LevelBiologyEnzymes9700/12 · Oct/Nov 2015 · 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
A: 1, 2 and 3
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