Q. Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
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
Explanation
[Solution from source] Almost all enzymes are proteins, and the non-protein exceptions are RNA molecules (ribozymes), not lipids. Enzymes of thermophilic organisms in hot springs do stay active at 80-90°C, and enzymes do have an optimum pH and high specificity. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.