The graph shows the effect of temperature on the rate at which the enzyme in a biological washing powder digests and removes fruit juice stains.
Which statements explain the shape of the graph at temperatures higher than X?
1 Bonds are broken between the R groups of the amino acids in the polypeptide chains of the enzyme.
2 There are more collisions between the enzyme and its substrate.
3 The tertiary structure of the enzyme is altered.
4 The shapes of the active site and the substrate are no longer complementary.
1 )
1, 2 and 3
2 )
1, 2 and 4
1, 3 and 4
4 )
2, 3 and 4
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