Digestive enzymes

Question 1

Pepsin - what does it digest, where is it made and where does it act?

Answer 1

secreted from chief cells in stomach as pepsinogen
activated by H+ ions in stomach lumen
can activate other pepsin molecules
breaks down proteins into polypeptides

Question 2

Trypsin - what does it digest, where is it made and where does it act?

Answer 2

good question

Question 3

Chymotrypsin - what does it digest, where is it made and where does it act?

Answer 3

even better question

Question 4

Amylase - what does it digest, where is it made and where does it act?

Answer 4

secreted in mouth and from pancreas
acts in small intestine
breaks down carbohydrate polysaccharides into disaccharides for brush border enzymes to break down further before absorption

Question 5

Sucrase - what does it digest, where is it made and where does it act?

Answer 5

sits on brush border wall
acts on brush border
breaks down sucrose into fructose and glucose

Question 6

Maltase - what does it digest, where is it made and where does it act?

Answer 6

sits on brush border wall
acts on brush border
breaks down maltose into 2 glucose monomers

Question 7

Lactase - what does it digest, where is it made and where does it act?

Answer 7

sits on brush border wall
acts on brush border
breaks down lactose into glucose and galactose

Question 8

Pancreatic lipase - what does it digest, where is it made and where does it act?

Answer 8

made in pancreas
secreted into gut (stomach?)
breaks the ester bonds in a TAG to form a MAG + 2 fatty acids

Question 9

Lipoprotein lipase - what does it digest, where is it made and where does it act?

Answer 9

found and acts on borders of body tissues
breaks TAG down into MAG and 2 fatty acids and absorbs them into the cell