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Home Q & A Board Biology-Related Homework Help General Biology
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roxana90 roxana90
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13 years ago
In order for a process to be spontaneous it must result
in the release of free energy. But there are many processes that occur within the cells
of your body that absorb free energy. Obvious examples are the contraction of
muscle cells when you lift a book or the absorption of nutrients by the cells
lining your intestine. How is this possible? What must be done at the molecular level
to make these processes occur (be spontaneous)?
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#1
13 years ago
Bonds of various energy molecules, such as ATP must be broken in order to release energy.

For instance, ATP is made up of three high energy phosphate molecules. When the bonds between these energy molecules are broken (say by an enzyme: P--P--P--Adenosine Rightwards Arrow ~*P*~   P--P--Adenosine ), free energy is released, and in turn, spontaneity results.
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