Consider the following statements regarding enzymes:
1. Enzymes act as biological catalysts that speed up chemical reactions.
2. Each enzyme is specific to a particular reaction and functions optimally at a certain temperature and pH.
3. Enzymes are consumed in the reaction and cannot be reused.

Which of the above statements is/are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

Question

Consider the following statements regarding enzymes:
1. Enzymes act as biological catalysts that speed up chemical reactions.
2. Each enzyme is specific to a particular reaction and functions optimally at a certain temperature and pH.
3. Enzymes are consumed in the reaction and cannot be reused.

Which of the above statements is/are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

ONLiNE UPSC · Accepted Answer

Statement 1 is correct: Enzymes are biological catalysts that speed up chemical reactions without being permanently altered.
Statement 2 is correct: They are highly specific to substrates and work optimally at certain temperature and pH ranges.
Statement 3 is not correct: Enzymes are not consumed in the reaction, they can be reused multiple times.

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Properties and Functions of Enzymes

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E Question 1	⏱ 0
Consider the following statements regarding enzymes: 1. Enzymes act as biological catalysts that speed up chemical reactions. 2. Each enzyme is specific to a particular reaction and functions optimally at a certain temperature and pH. 3. Enzymes are consumed in the reaction and cannot be reused. Which of the above statements is/are correct? (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3