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The action of endopeptidases and exopeptidases can increase the rate of protein digestion - AQA - A-Level Biology - Question 5 - 2021 - Paper 3
Question 5
The action of endopeptidases and exopeptidases can increase the rate of protein digestion. Describe how. Exopeptidases hydrolyse peptide bonds at the ends of a poly... show full transcript
Worked Solution & Example Answer:The action of endopeptidases and exopeptidases can increase the rate of protein digestion - AQA - A-Level Biology - Question 5 - 2021 - Paper 3
Step 1
Describe how exopeptidases and endopeptidases increase the rate of protein digestion.
Answer
Exopeptidases hydrolyse peptide bonds at the ends of a polypeptide/protein and endopeptidases hydrolyse internal peptide bonds within a polypeptide/protein. This action leads to a greater number of smaller peptides and amino acids available for absorption, increasing the surface area for digestion and enhancing the overall rate of protein breakdown.