AP BIOLOGY

CELL RESPIRATION

GLYCOLYSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Most of the energy in ATP is stored
A
in the bond between the second and third phosphate
B
in the bond between the first and second phosphate
C
in the bond between the adenosine and the first phosphate
D
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Explanation: 

Detailed explanation-1: -The correct answer is (C). The majority of energy in an ATP molecule is stored in the bond between the last and middle phosphate groups.

Detailed explanation-2: -These three phosphate groups are linked to one another by two high-energy bonds called phosphoanhydride bonds.

Detailed explanation-3: -The last phosphate bond holds the most energy (approx. 7 kcal/mole). It is called the pyrophosphate bond. In order to release it’s energy to the body, ATP breaks down into ADP [Adenosine Diphosphate(2 phosphates)] and an inorganic phosphate group and releases energy from the pyrophosphate bond.

There is 1 question to complete.