AP BIOLOGY

Detailed explanation-1: -ATP is not a storage molecule for chemical energy; that is the job of carbohydrates, such as glycogen, and fats. When energy is needed by the cell, it is converted from storage molecules into ATP.

Detailed explanation-2: -ATP can be used to store energy for future reactions or be withdrawn to pay for reactions when energy is required by the cell. Animals store the energy obtained from the breakdown of food as ATP. Likewise, plants capture and store the energy they derive from light during photosynthesis in ATP molecules.

Detailed explanation-3: -This chemical energy is stored in the pyrophosphate bond, which lies between the last two phosphate groups of ATP. When the cells need energy to do any work, ATP cleaves the third phosphate group, releasing a large amount of energy stored in the bond between the third and second phosphate group.

Detailed explanation-4: -Answer and Explanation: The true statement about ATP is: ATP consists of ribose, adenine, and three phosphate groups.

Detailed explanation-5: -The common feature is that ATP can be stored in large dense core vesicles together with neurotransmitters.