Question

Statement I: Lysosomes were found to be very rich in hydrolytic enzymes.
Statement II: These enzymes are optimally active at the basic pH.
Identify the correct option from the following:

• A. Both statements I and II are correct
• B. Both statements I and II are false
• C. Statement I is correct but Statement II is false
• D. Statement I is false but Statement II is correct

Hint:

Lysosomes are acidic compartments. Their enzymes (acid hydrolases) do not work in basic conditions.

Answer 1

The Correct Option is C

Step 1: Analyze Statement I
Lysosomes are membrane-bound cell organelles that contain a variety of hydrolytic enzymes like proteases, lipases, and nucleases. These enzymes break down waste materials and cellular debris.
→ Therefore, Statement I is correct.

Step 2: Analyze Statement II
The hydrolytic enzymes within lysosomes require an acidic pH (around 4.5 to 5.0) to function optimally. This acidic condition is maintained by proton pumps in the lysosomal membrane. A basic pH (greater than 7) would inactivate these enzymes.
→ Thus, Statement II is false.

Step 3: Final Conclusion
Since Statement I is correct and Statement II is false, the correct option is (3).