ATP

• glucose isn't a direct source of energy
• during respiration, energy released from glucose is used to make ATP
• ATP - adenosine triphosphate
• made of adenine, ribose sugar, and three phosphate groups
• nucleotide derivative
• once made, ATP diffuses to the part of the cell that needs energy
• energy in ATP is stored in the high energy bonds between the phosphate groups. released via hydrolysis reactions