Cellular Respiration Meaning In Biology

Cell respiration a catabolic process see catabolism occurring in cells where complex organic molecules are broken down to release energy for other cellular processes.

Cellular respiration meaning in biology. Cell respiration usually occurs in the presence of oxygen see aerobic respiration but some organisms can respire without oxygen see anaerobic respiration. The reactions involved in respiration are catabolic reactions which break large molecules into smaller ones releasing energy because weak high energy bonds in particular in molecular oxygen are replaced by stronger bonds in the products. To create atp and other forms of energy that they can use to power their life functions cells require fuel and an electron acceptor which drives the chemical process of turning energy from that fuel into a useable form. It includes glycolysis the tca cycle and oxidative phosphorylation.

Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate and then release waste products.