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Energy Requirement of Living Systems
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AP Biology
APB.175 Energy Requirement of Living Systems
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A reaction in a cell releases energy, but no cellular work is coupled to it. Which statement best explains why cells regulate such reactions in metabolic pathways?
A
Uncoupled releases create extra energy that cells must store forever.
B
Uncoupled releases can dissipate energy as heat, so regulation helps capture and direct energy toward useful work.
C
Uncoupled releases prevent entropy from increasing in the surroundings.
D
Uncoupled releases allow endergonic reactions to proceed without any mechanism.
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