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A-Level Biology OCR A

Digestion Proteins Peptides Amino Acids Absorbed Summarise Role

Proteins are digested by trypsin into peptides, and then into amino acids by other proteases for cellular absorption.

Proteins are digested by trypsin into smaller peptides, which are then broken down into amino acids by other proteases for absorption.

Front Summarise the digestion of proteins as an example of the role of extracellular enzymes.
Back Digestion of proteins:
  • Proteins are digested into smaller peptides using trypsin (produced in pancreas and released into small intestine)
  • Peptides are broken down further into amino acids by other proteases
  • Amino acids are absorbed by cell lining of digestive system and then absorbed into bloodstream

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