Question

Lysosomes are not helpful in which of the following?
A) Osteogenesis
B) Cellular digestion
C) Metamorphosis in frog
D) Lipogenesis

Answer 1

Lysosome is defined as membrane-bound organelle containing digestive enzymes. They are also known as “suicidal bags” of a cell.

Complete answer:

Option A:- Osteogenesis or ossification is defined as a process responsible for the bone formation via osteoblasts. There are basically two types of osteogenesis – intramembranous (process of bone development arising out of fibrous membrane) and endochondral (process of bone formation from hyaline cartilage). The formation and presence of the lysosomal enzymes degrade the organic matrix by removal of the bone in presence of the osteoclasts. Therefore, this is the incorrect option.
Option B:- Lysosomes are assistants of the cells as they serve as a mean for storing hydrolases and digesting specific biological macromolecules such as proteins, fats, and carbohydrates. Therefore, this is the incorrect option.
Option C:- Metamorphosis in frogs is defined as the process involving change in the appearance of the fish like form to that of an adult frog. Metamorphosis is initiated and regulated by hormone Thyroxine (TH) and the process is acknowledged as obligatory. The lysosomes are involved in the process of eating away larval organs thereby resulting in the removal of obstructions, fertilization, intracellular scavenging, etc. Therefore, this is the incorrect option.
Option D:-Lipogenesis is defined as a process of synthesizing both the fatty acids and the triglycerides from the glucose or other substrates. The lysosomes have no biological role here in lipogenesis. Therefore, this is the correct option.

Thus, the correct option is (D) .

Note: Liposomes are abundantly found in WBCs, osteoclasts, chondroclasts, etc. They play a key role in solubilising materials obtained from the outer environment through either the process of phagocytosis or pinocytosis.In humans, lipogenesis plays an important role in physiologic and pathophysiologic conditions.