Ground Rules of Metabolism
Subject:
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Superoxide
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Ground Rules of Metabolism
Subject:
Growing Old with Molecular Mayhem
A. The enzymes superoxide dismutase and catalase work together to rid the body’s cells of damaging free radicals.
B.As people age, their capacity to produce functional enzymes begins to falter.
I. Energy and the Underlying Organization of Life
A. Defining Energy
1.Potential energy is the capacity to make things happen, to do work; it can also be called chemical energy, measured in kilocalories.
2.Kinetic energy is the energy of motion; it includes heat energy.
3.Metabolism refers to the cell’s capacity to acquire energy and use it to build, store, break apart, and eliminate substances in controlled ways.
B. How Much Energy Is Available?
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