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Fats contain carbon, hydrogen, and oxygen. They have a high proportion of hydrogen which makes them a more concentrated form of energy than either carbohydrates or protein. Each gram of fat or oil produces about 9 Calories of energy. Fats are the primary source of energy during prolonged aerobic exercise. The release of energy from fat requires more oxygen than the release of the same amount of energy from carbohydrates. Fat metabolism therefore puts a greater strain on the oxygen transport system.

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14y ago
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14y ago

Fat is a better storage compound than starch because fat contains more chemical energy.

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Q: Why is fat a more efficient storage mode for energy?
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