AP BIOLOGY

Detailed explanation-1: -Adenosine 5’-triphosphate, or ATP, is the most abundant energy carrier molecule in cells. This molecule is made of a nitrogen base (adenine), a ribose sugar, and three phosphate groups.

Detailed explanation-2: -The majority of energy in an ATP molecule is stored in the bond between the last and middle phosphate groups.

Detailed explanation-3: -The organic molecules that store the most energy are called fats or triglycerides. The animal body uses carbohydrates (glycogen) for medium-term energy storage and fats or triglycerides (lipids) for long-term energy storage.

Detailed explanation-4: -It is estimated that there is only about 100g of ATP and about 120g of phosphocreatine stored in the body, mostly within the muscle cells.

Detailed explanation-5: -ATP (adenosine triphosphate) stores more energy than ADP (adenosine diphosphate). ATP has three phosphate groups with high energy bonds located between each group. ADP has only two phosphate groups. ADP also has high energy bonds located between each group.