AP BIOLOGY

Detailed explanation-1: -In the mitochondrion, electrons-which have been released from a carbohydrate food molecule in the course of its degradation to CO2-are transferred through the membrane by a chain of electron carriers, finally reducing oxygen gas (O2) to form water.

Detailed explanation-2: -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.

Detailed explanation-3: -In a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose. In mitochondria, through the process of cellular respiration breaks down sugar into energy that plant cells can use to live and grow.

Detailed explanation-4: -Cellular respiration is the process that occurs in the mitochondria of organisms (animals and plants) to break down sugar in the presence of oxygen to release energy in the form of ATP. This process releases carbon dioxide and water as waste products.