Organisms need energy in order to survive. The process of organisms converting food into chemical energy known as ATP is called cellular respiration. During cellular respiration, glucose and oxygen are converted into carbon dioxide, water, and ATP.
There are two types of cellular respiration that organisms can undergo. Aerobic respiration requires the presence of oxygen and anaerobic respiration doesn't require any oxygen.
Key terms involved in cellular respiration:
NADH a molecule used to transport electrons from one point to another known as an electron carrier.
Glycolysis the process of glucose being converted into ATP.
Kreb's Cycle a cycle where pyruvic acid is broken down into the molecules carbon dioxide, ATP, and also electrons.