Question

Enzymes generally get destroyed at temperature of _______ \({}^{\circ }\text{C}\).

• A. \(10-20\)
• B. \(30-40\)
• C. \(50-60\)
• D. \(60-70\)

Hint:

Enzymes are proteins, and heat above their optimum range denatures them.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept
Enzymes are proteins and are thermolabile.
Most work best at about 30-40 degrees Celsius.

Step 2: Effect of high temperature
Low temperature only slows enzymes reversibly.
Above the optimum, heat breaks the weak bonds holding the folded shape, the active site is lost, and the enzyme is denatured.

Step 3: Conclusion
At about 60-70 degrees Celsius enzymes are generally destroyed.

Final Answer:
Enzymes are generally destroyed at 60-70 degrees Celsius, option (D). \[ \boxed{\text{(D) }60-70^{\circ}\text{C}} \]