Why do triglycerides produce more energy per gram when catabolized as compared to carbohydrates?Group of answer choicesA) Triglycerides have more carbon atoms than carbohydratesB) Triglycerides are stored with water, which helps with catabolic reactionsC) Triglycerides are more reduced than carbohydratesD) Triglycerides are relatively more inert/stableE) Because cells are not equipped to store triglycerides
Question
Why do triglycerides produce more energy per gram when catabolized as compared to carbohydrates?Group of answer choicesA) Triglycerides have more carbon atoms than carbohydratesB) Triglycerides are stored with water, which helps with catabolic reactionsC) Triglycerides are more reduced than carbohydratesD) Triglycerides are relatively more inert/stableE) Because cells are not equipped to store triglycerides
Solution
The reason why triglycerides produce more energy per gram when catabolized as compared to carbohydrates is because triglycerides are more reduced than carbohydrates (Choice C).
Here's a step-by-step explanation:
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Triglycerides and carbohydrates are both sources of energy for the body. They are broken down, or catabolized, to release this energy.
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The energy content of a molecule is related to the number of high-energy electrons it contains. These are typically found in the hydrogen atoms of the molecule.
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A molecule is said to be 'reduced' when it has a lot of hydrogen atoms. The more reduced a molecule is, the more energy it can provide when catabolized.
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Triglycerides are more reduced than carbohydrates. They have more hydrogen atoms per molecule, and therefore more high-energy electrons.
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Therefore, when a triglyceride molecule is catabolized, it releases more energy than a carbohydrate molecule.
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This is why triglycerides provide more energy per gram than carbohydrates when they are catabolized.
Similar Questions
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Which of the following statements is true for the class of biological molecules known as lipids?Group of answer choicesThey are made from glycerol, fatty acids, and phosphate.They contain less energy than carbohydrates of the same number of carbon atoms.They are polymers made by dehydration reactions.They are insoluble in water.They contain nitrogen.
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