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- molecules of acetyl-CoA,
- fragments, converted into molecules of
- acetyl-CoA, and fed into the Krebs cycle.
- Similarly, proteins are first hydrolyzed
- into their constituent amino acids. Next,
- some amino acids are converted into pyruvic
- acid, some into acetyl-CoA, and some into
- intermediate compounds of the Krebs cycle.
- Whereas equal masses of carbohydrate and
- protein yield about equal amounts of energy,
- an equal amount of fat will yield about twice
- as much energy since fats are more
- completely reduced to begin with.
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-