Question

Lysosomes are reservoirs of:
a. Fats
b. Rna
c. Secretory glycoprotein
d. Hydrolytic enzymes

Answer 1

The lysosomes are membrane bound vesicular structures present in the cell. These vesicular structures are found to be very rich in almost all types of hydrolytic enzymes (hydrolases) optimally active at acidic pH.

Complete answer:
A lysosome is a membrane bound organelle that contains digestive enzymes of up to 60 types. These are known to be involved in various cell processes. They break down excess or worn out cell particles. These are also known as the suicidal bags.
It has a membrane around it which stores the digestive enzymes that require acidic i.e. low pH environment. Those enzymes are called hydrolytic enzymes. These enzymes break down the large molecules into small molecules. For example- proteins into amino acids, carbohydrates into sugars and lipids into fatty acids.
Also, it acts as a defense mechanism, it is known to have degradable enzymes that work on pathogens like bacteria. So, it provides protection from infections also.
Nevertheless, the lysosome is involved in various cell processes including secretions, plasma membrane repair, apoptosis, and cell signaling and energy metabolism.

So, the correct answer option D) Hydrolytic enzymes.

Additional information:
Enzymes of lysosome are synthesized in the rough endoplasmic reticulum and exported to the Golgi apparatus. The enzymes are transported from Golgi apparatus to lysosome in small vesicles, which fuse with larger vesicles.

Note: Lysosomes maintain their pH by pumping in protons from the cytosol across the membrane via proton pumps. The lysosomes do not digest any of the cell components unaware of the cell. These work in a well-coordinated manner with the cell and execute only when required.