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Question 870005
JEE Chemistry · Medium

Biomolecules and Polymers: Enzyme catalysis MCQ

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Enzyme catalysisMediumQuestion 870005

Question

Enzymes are biological catalysts that:
  1. A
    Lower activation energy and are highly specific (lock-and-key or induced fit model)
    Correct
  2. B
    Increase activation energy
  3. C
    Work at any pH and temperature
  4. D
    Are lipids

Correct answer

Lower activation energy and are highly specific (lock-and-key or induced fit model)

Explanation

Enzymes are proteins (mostly) that catalyse specific biochemical reactions. They lower Ea without being consumed. Substrate fits the active site (lock-and-key: rigid fit; induced-fit: active site adapts). Optimum pH and temperature specific to each enzyme.

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