Cellular Energy

AP Biology· difficulty 2/5

Cells use ATP to drive endergonic reactions by

  • A

    Lowering the activation energy without any free energy input

  • B

    Adding inorganic catalysts that shift the chemical equilibrium

  • C

    Coupling them with the highly exergonic hydrolysis of ATP

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  • D

    Heating the cell to raise the kinetic energy of reactants

Explanation

Sum of two reactions: if combined ΔG is negative, the coupled reaction proceeds.

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