Digestion of Proteins by Proteases

Question 1

Protein digestion begins in the

Answer 1

Protein digestion begins in the lumen of the stomach by protease enzymes

Question 2

A protease enzyme called an endopeptidase hydrolyses

Answer 2

peptide bonds in the middle of polymer proteins chain creating smaller sized protein “chunks”

Question 3

endopeptidase This enzyme is secreted along with

Answer 3

hydrochloric acid, meaning the pH in the stomach is low and therefore acidic

Question 4

The partially digested food moves from the stomach into the

Answer 4

small intestine

Question 5

Fluid secreted by the pancreas travels to the small intestine and helps to

Answer 5

neutralize the acidic mixture and increase the pH.

Question 6

This pancreatic juice contains

Answer 6

endopeptidases and exopeptidases

Question 7

Exopeptidases hydrolyse

Answer 7

hydrolyse peptide bonds at the ends of polypeptide chains to produce dipeptides

Question 8

Lastly, there are dipeptidase enzymes found within the

Answer 8

ileum and duodenum

Question 9

These enzymes dipeptidase hydrolyse dipeptides into

Answer 9

amino acids which can be transported from to epithelial and then bloodstream

Question 10

Where does digestion of proteins happen

Answer 10

First stomach then duodenum and ileum