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.
It is produced in the mitochondria during cellular respiration, and a little is produ â¦ ced in the light dependent reactions of photosynthesis, but this is later used up in the light independent reactions. ATP is used as an energy source for cells to carry out functions like active transport.When a cell needs energy, it breaks one of the phosphates off of the ATP, which releases energy. After this, the ATP is called ADP (adenosine diphosphate). + 2 others found this useful.TP is used as an energy source for cells to carry out functions like active transport. When a cell needs energy, it breaks one of the phosphates off of the ATP, which releases energy. After this, the ATP is called ADP (adenosine diphosphate). + 2 others found this useful.