Question

how mitochondria generates energy. write a long note.

Answer 1

Here is your answer -
Mitochondria, using oxygen available within the cell convert chemical energy from food in the cell to energy in a form usable to the host cell. The process is called oxidative phosphorylation and it happens inside mitochondria. In the matrix of mitochondria the reactions known as the citric acid or Krebs cycle produce a chemical called NADH. NADH is then used by enzymes embedded in the mitochondrial inner membrane to generate adenosine triphosphate (ATP). In ATP the energy is stored in the form of chemical bonds. These bonds can be opened and the energy redeemed.

In return the host cell provides physical protection and a constant supply of food and oxygen.

Mitochondrial cells divide using their own circular strand of DNA and as a result there can be many mitochondria in one cell. In cells where there is a high energy demand large numbers of mitochondria are found.

Answer 2

Answer:

Mitochondria are the powerhouses of the cell because they “burn” or break the chemical bonds of glucose to release energy to do work in a cell. ... This releases energy for the cell. ATP is the energy-carrying molecule produced by the mitochondria through a series of chemical reactions.