Question

The function of Mitochondria is
A. To provide coenzyme A
B. To synthesize PGA
C. To release energy during respiration
D. All of the above

Answer 1

Hint: Mitochondria are double membranous threads like granular structure present in the eukaryotic cell. They are called the powerhouse of the cell. They have their own DNA. So they synthesise the proteins which they need for cellular metabolism.

Complete answer:
To solve this question, we must know about the functions of Mitochondria.
Mitochondria are the semi autonomous bodies within a cell. It is one of the important organelle of the cell which is called the respiration centre of the cell.

Function of Mitochondria:
- The important role of mitochondria is to produce energy by the process of oxidative phosphorylation. The ATP is produced by the phosphorylation of NADH which involves transfer of electrons by the electron carriers. This is a major step of aerobic respiration.
- It helps in cell multiplication and cell growth.
- It is also important in apoptosis or programmed cell death.

Let us discuss the other options-
To provide coenzyme A- The coenzyme A is naturally synthesised which is found in food and dairy products.
To synthesize PGA- PGA or phosphoglyceric acid is the first three carbon compounds formed as a result of photosynthesis in chloroplast.

Thus the correct answer is (C). The function of mitochondria is to release energy during respiration.

Note: Mitochondria is absent in the prokaryotic cells. They produce energy in the cell membrane surface. In the human body the heart muscle cells have more mitochondria as they require more energy.