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.
1, 2 and 3
2 )
1 and 2 only
3 )
1 and 3 only
4 )
2 and 3 only
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