NEET2010BotanyBiomolecules (B)Actual
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
Options
- AEnzymes require optimum pH for maximal activity
- BEnzymes are denatured at high temperature but in certain exceptional organisms they are effective even at temp
- CEnzymes are highly specific
- DMost enzymes are proteins but some are lipids
Correct answer
D. Most enzymes are proteins but some are lipids
Step-by-step solution
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.