(ii) Suggest why the amount of amino acids continued to increase in the duodenum
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Answer:PROTEIN DIGESTION: STEPS, ENZYMES, AND HORMONES
The body requires proteins, and particularly the essential amino acids contained in them. The recommended daily intake for a healthy adult subject is 0.85 g/kg body weight, so for a 70 kg person is about 60 g, but often in the typical Western diet the intake is greater than 100 g/day.
In addition to food proteins, the body also digests 50-100 g of endogenous proteins secreted or lost into the lumen of the gastrointestinal tract, and which result from:
saliva;
gastric juice;
pancreatic enzymes and other secretions;
intestinal cells that flake off;
proteins that pass into the intestinal lumen from the bloodstream.
Explanation:
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