What does the mitochondria do for our body, what benefits does it give?

Mitochondria provides energy to the body.

Explanation:

Mitochondria is an important organelle of the cell. Mitochondria is also called power house of the cell because it generates energy in the form of Adenine tri phosphate (ATP) by the breakdown of glucose molecules in the process of respiration. In the presence of oxygen, mitochondria produce more ATP while without oxygen very low ATP is produced.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.