FOOD CHEMISTRY
CARBOHYDRATES PROTEINS AND LIPIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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No, never
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Yes, only when carbohydrates and lipids are not available
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Yes, only when nucleic acids are not available
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None of the above
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Detailed explanation-1: -Protein is not usually used for energy. However, if the body is not getting enough calories from other nutrients or from the fat stored in the body, protein is broken down into ketone bodies to be used for energy.
Detailed explanation-2: -One of the reasons low-fat diets are recommended for weight loss is because fats, also called lipids, contain more calories per gram, and thus more energy, than carbohydrates or proteins.
Detailed explanation-3: -Carbohydrates play a significant role in the body for regular metabolic functions, and along with fat they are our bodies main energy source. However, carbohydrates yield more energy per unit of oxygen than fats. Since anaerobic exercise is in the absence of oxygen, the body uses carbohydrates immediately.