ATP works by losing the endmost phosphate group when instructed to do so by an enzyme. This reaction releases a lot of energy, which the organism can then use to build proteins, contact muscles, etc.

If oxygen is available to the cell then the pyruvate molecules can be further broken down in stage two to release more energy and produce a greater quantity of ATP. A pyruvate molecule enters the ...

(Image: Wikimedia Commons, Public Domain) Purines are essential components of nucleic acids ... It consists of an adenine base, a ribose sugar, and three phosphate groups. The hydrolysis of ATP ...