In human beings, the complete digestion of proteins results in the formation of which substances?
Amino acids
Proteins are large polymers made of many amino acids joined by peptide bonds.
During digestion, protein-splitting enzymes (proteases such as pepsin in the stomach and trypsin, chymotrypsin and peptidases in the small intestine) break these peptide bonds step by step.
The complete digestion of a protein therefore yields its building blocks — amino acids — which are then absorbed through the intestinal wall into the blood.
Glucose is the end product of carbohydrate digestion, while fatty acids and glycerol come from the digestion of fats; hence, complete digestion of proteins gives amino acids.
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