Question

Which of the following statements is true of enzymes A. They're unusable after a reaction B. They don't provide an active site for substrates to bind in a reaction C. They change shape after a reaction D. They act on a specific type of substrate in a reaction

Answer 1

D. They act on a specific type of substrate in a reaction

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Answer 2

Answer:

D. They act on a specific type of substrate in a reaction

Explanation:

Enzymes are substrate specific. That is to say they will take part in a reaction that has one specific type of substrate and no other. Lactase for example is an enzyme that is normally found in the small intestines. It is useful in the hydrolysis of lactose, a sugar found in milk. Lactase only participates in this reaction only. It will not hydrolyse other sugars or substrates that are not lactose.