AP BIOLOGY

BIOCHEMISTRY

ENZYMES AND METABOLISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Explain what ATP is and how it can change to ADP and then, convert back into ATP.
A
ATP is 3 phosphates; when energy is used to form a bond, the terminal phosphate releases energy and transfers a phosphate for protein synthesis creating ADP; then it is synthesizes energy to convert back to ATP.
B
ATP is a whole lot of phosphates; when energy is released during cellular metabolism all the phosphates to cellular respiration; the energy is then recycled and used to create a need bond in the form of ADP.
C
ATP is 3 phosphates; when energy is released during cellular respiration, the terminal end phosphate captures some of that energy, then the energy is released when that bond breaks becoming ADP; ADP can convert back to ATP by adding energy and 2 more phosphates.
D
ATP is 3 phosphates; when energy is released during cellular respiration, the terminal end phosphate captures some of that energy, then the energy is released when that bond breaks becoming ADP; ADP can convert back to ATP by adding energy and 1 phosphate.
Explanation: 

Detailed explanation-1: -When the cell has extra energy (gained from breaking down food that has been consumed or, in the case of plants, made via photosynthesis), it stores that energy by reattaching a free phosphate molecule to ADP, turning it back into ATP. The ATP molecule is just like a rechargeable battery.

Detailed explanation-2: -When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP). Likewise, energy is also released when a phosphate is removed from ADP to form adenosine monophosphate (AMP).

Detailed explanation-3: -Adenosine triphosphate (ATP) is the source of energy for use and storage at the cellular level. The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups.

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