Multiple Choice
ATP is used for ________ in all cells.
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7. Energy and Metabolism
ATP
Multiple Choice
How does ATP participate in energy-coupling reactions?
A
Hydrolysis of ATP fuels endergonic reactions.
B
Hydrolysis of ADP fuels endergonic reactions.
C
Synthesis of ATP fuels exergonic reactions.
D
Synthesis of ADP fuels exergonic reactions.
Verified step by step guidance1
Understand the concept of energy-coupling: In biological systems, energy-coupling refers to the process where energy released from an exergonic reaction is used to drive an endergonic reaction.
Learn about ATP (adenosine triphosphate): ATP is a molecule that carries energy within cells. It is composed of adenine, ribose, and three phosphate groups.
Explore ATP hydrolysis: Hydrolysis of ATP involves breaking the bond between the second and third phosphate groups, releasing energy. This reaction is exergonic, meaning it releases energy.
Connect ATP hydrolysis to endergonic reactions: The energy released from ATP hydrolysis can be used to drive endergonic reactions, which require an input of energy to proceed.
Consider the synthesis of ATP: The synthesis of ATP from ADP (adenosine diphosphate) and inorganic phosphate is an endergonic process, requiring energy input, often from cellular respiration or photosynthesis.
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