ATP
Correct! Adenosine 5'- triphosphate (ATP) is a nucleotide used for energy transfer in cells. ATP is the primary energy currency for most cells. Under aerobic conditions, oxidative phosphorylation is used to generate ATP and fermentation occurs under anaerobic conditions. A molecule of ATP consists of high energy phosphate-phosphate bonds, which upon hydrolysis, releases energy that can be used by various proteins to carry out metabolic activities in the cell.