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.
Mitochondria. Mitochondria are rod-shaped organelles that can be considered the power generators of the cell, converting oxygen and nutrients into adenosine triphosphate (ATP). ATP is the chemical energy currency of the cell that powers the cell's metabolic activities. This process is called aerobic respiration and is the reason animals breathe oxygen.