Related words. 1  key adjective. 2  key verb. 3  key in phrasal verb. 4  key to phrasal verb. 5  Alt key noun. 6  hot key noun. 7  low-key adjective. 8  off-key adjective, adverb. 9  tab key noun. 10  Allen key noun. 11  arrow key noun. 12  enter key noun. 13  key card noun. 14  key ring noun. 15  pass key noun. 16  pound key noun. 17  shift key noun. 18  star key noun. 19  command key noun. 20  control key noun.
Lesson Summary. ATP, or adenosine triphosphate, is a high-energy molecule that is found floating in the cytoplasm of every cell. It's a three-part molecule that has a phosphate group.
Adenosine Triphosphate (ATP): ATP is a molecule that serves as the universal energy source for all plants and animals. In your body, ATP breaks down into adenosine diphosphate plus a separate phosphate group. This releases energy, which is used to power your body's cells. During periods of inactivity, the reverse reaction takes place, and the phosphate group is reattached to the molecule using energy obtained from food. In this way, the ATP molecule is continuously being recycled by your body.