. Protein was the only food available to a mammal. If this supply of protein was only half the minimum required to supply its energy needs, the mammal would show an increase in the
Question
. Protein was the only food available to a mammal. If this supply of protein was only half the minimum required to supply its energy needs, the mammal would show an increase in the
Solution
The mammal would show an increase in the breakdown of body fat.
Here's why:
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Proteins are not the primary source of energy for mammals. Carbohydrates and fats are the main sources.
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When there is a deficiency in the energy supply from the diet, the body starts to use its stored resources to meet its energy needs.
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Initially, the body will break down the glycogen stored in the liver into glucose, which can be used for energy.
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Once the glycogen stores are depleted, the body will start to break down fats stored in adipose tissue into fatty acids and glycerol, which can also be used for energy.
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Therefore, if a mammal's diet consisted only of protein, and this protein supply was only half of the minimum required to supply its energy needs, the mammal would start to break down its fat stores to make up for the energy deficit. This would result in an increase in the breakdown of body fat.
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