Question

Highest number of enzyme is found in-
a. Lysosome
b. Chloroplast
c. Mitochondria
d. Peroxisome

Answer 1

Hint: An enzyme acts as a catalyst in living organisms, by regulating the rate of a chemical reaction. Enzymes use most of the energy released from the breakdown of nutrients to synthesize ATP. Various enzymes are present. The organelle having the highest number of enzymes lack Glucose6- Phosphate dehydrogenase.

Complete answer:
Most of the biological processes that occur in a living being are regulated by enzymes.

> Mitochondria is the site for aerobic respiration in cells and produces energy in the form of ATP. Different pathways such are regulated for the production of energy such as electron transport chain (ETS), Kreb's cycle are involved and regulated by the action of different enzymes.

> The lysosomes have acid hydrolases or hydrolytic digestive enzymes.

> The chloroplasts have photosynthetic enzymes for carrying out the synthesis of sugars.

> Peroxisomes have enzymes like catalase and peroxidase concerned with peroxide metabolism.

Hence, The correct answer is option (C).

Additional information:
The mitochondria contain the highest number of enzymes. Mitochondria contain respiratory enzymes concerned with ATP synthesis in eukaryotic cells. The entire inner mitochondrial membrane is studded with enzymes of respiratory electron transport. The mitochondrial matrix contains enzymes for Kreb's cycle.

The matrix, peri-mitochondrial space also contains enzymes. Mitochondria is a semi-autonomous, double membrane-bound organelle. Different cells have a different amount of mitochondria as per the requirement of energy. The number of mitochondria in a cell varies, depending on the organism, tissue, and cell type.

Note: Mitochondria contain two membranes- outer and inner, which are composed of phospholipids bilayers and proteins. The structure of mitochondria consists of the outer and inner membrane, intermembrane space, cristae, and the matrix. Mitoplasts are also present on the outer membrane.
Some of the enzymes that are present in mitochondria are monoamine oxidase, kynurenine hydroxylase, rotenone-insensitive NADH-cytochrome c-reductase, and fatty acid Co-A ligase.