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Both DNA and RNA, present in the nuclei of cells forming the ingested foods, are hydrolyzed to their nucleotide monomers by pancreatic nucleases present in pancreatic juice. The nucleotides are then broken apart by intestinal brush border enzymes, which release their free bases, pentose sugars, and phosphate ions.

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14y ago
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11y ago

Beginning with the oral-cavity-saliva, digestive enzymes called proteases begin the process, yet most of the amino-acid-liberation occurs in a strong acid - i.e. HCl stomach acid - environment; along with the actions of stomach proteases such as pepsin.

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12y ago

Chemical digestion.

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Q: Where are amino acids digested?
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