NEET 2012 Chemistry question

Not in JEE Main or NEET syllabus

Which one of the following statements is **incorrect** about enzyme catalysis?

(1)Enzymes are least reactive at optimum temperatureCorrect
(2)Enzymes are mostly proteinous in nature
(3)Enzyme action is specific
(4)Enzymes are denaturated by ultraviolet rays and at high temperature

Answer: (1)

Solution

Enzymes show maximum (not least) activity at their optimum temperature (about 298-310 K) and optimum pH, so statement (1) is incorrect. The other statements are correct: enzymes are

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Question ID VK-091114