Enzymes show pH sensitivity and require an optimum pH for maximal activity. Enzymes are thermolabile (heat sensitive) and denatured at high temperatures. However, extremophiles (thermophilic bacteria) are exceptions. Most of the enzymes are highly specific in their action. Most enzymes are proteins but exceptionally some are RNA enzymes, eg, ribozymes.
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
NEET UG 2010 — Botany Biomolecules
2010mcqmedium
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
Official previous-year question
Held on 30 Apr 2010 · Verified 9 Jul 2026.
Options
- A
Enzymes require optimum pH for maximal activity
- B
Enzymes are denatured at high temperature but in certain exceptional organisms they are effective even at temperatures 80∘−90∘C
- C
Enzymes are highly specific
- D
Most enzymes are proteins but some are lipids
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