When thinking of the functions of the organelles. which cell tissue in the human body would have the most mitochondria and why

Muscle cells, especially heart muscle cells and fat cells have the most mitochondria in the human body.

Explanation:

Mitochondria, the powerhouse of the cell is an organelle where cellular respiration occurs. They supply energy to the cells for their functioning. The number of mitochondria in a cell vary depending on the energy requirement of that cell.

Muscle cells are very active in our body and need energy for the movement. Heart muscle cells require a lot of energy to contract and pump blood through the circulatory system all the time. So they have a lot of mitochondria to produce a vast amount of energy they need.