EXTRA 9.3 Table of Major Digestive Enzymes

Question 1

salivary amylase

produced by:
site of action:
optimum pH:
digestion:

Answer 1

produced by: salivary glands
site of action: mouth
optimum pH: neutral
digestion: starch + H2O —> maltose

Question 2

pancreatic amylase

produced by:
site of action:
optimum pH:
digestion:

Answer 2

produced by: pancreas
site of action: small intestine
optimum pH: basic
digestion: starch + H2O —> maltose

Question 3

maltase

produced by:
site of action:
optimum pH:
digestion:

Answer 3

produced by: small intestine
site of action: small intestine
optimum pH: basic
digestion: maltose + H2O —> glucose + glucose

Question 4

pepsin

produced by:
site of action:
optimum pH:
digestion:

Answer 4

produced by: gastric glands
site of action: stomach
optimum pH: acidic
digestion: protein + H2O —> peptides

Question 5

trypsin

produced by:
site of action:
optimum pH:
digestion:

Answer 5

produced by: pancreas
site of action: small intestine
optimum pH: basic
digestion: protein + H2O —> peptides

Question 6

peptidases

produced by:
site of action:
optimum pH:
digestion:

Answer 6

produced by: small intestine
site of action: small intestine
optimum pH: basic
digestion: peptide + H2O —> amino acids

Question 7

nuclease

produced by:
site of action:
optimum pH:
digestion:

Answer 7

produced by: pancreas
site of action: small intestine
optimum pH: basic
digestion: RNA and DNA + H2O —> nucleotides

Question 8

nucleosidases

produced by:
site of action:
optimum pH:
digestion:

Answer 8

produced by: small intestine
site of action: small intestine
optimum pH: basic
digestion: nucleotide + H2O —> base + sugar + phosphate

Question 9

lipase

produced by:
site of action:
optimum pH:
digestion:

Answer 9

produced by: pancreas
site of action: small intestine
optimum pH: basic
digestion: fat droplet + H2O —> glycerol + fatty acids