Major Digestive Enzymes (Lecture 2 - Digestion and the Alimentary Canal)

Question 1

Salivary Amylase (carbohydrate digestion)

Answer 1

Produced by: Salivary glands
Site of Action: Mouth
Optimum pH: Neutral
Digestion: Starch + H2O –> maltose

Question 2

Pancreatic Amylase (carbohydrate digestion)

Answer 2

Produced by: Pancreas
Site of Action: Small Intestine
Optimum pH: Basic
Digestion: Starch + H2O –> maltose

Question 3

Maltase (carbohydrate digestion)

Answer 3

Produced by: Small Intestine
Site of Action: Small Intestine
Optimum pH: Basic
Digestion: Maltose + H2O –> glucose + glucose

Question 4

Lactase (carbohydrate digestion)

Answer 4

Produced by: Small Intestine
Site of Action: Small Intestine
Optimum pH: Basic
Digestion: Lactose + H2O –> glucose + galactose

Question 5

Pepsin (protein digestion)

Answer 5

Produced by: Gastric glands
Site of Action: Stomach
Optimum pH: Acidic
Digestion: Protein + H2O –> peptides

Question 6

Trypsin (protein digestion)

Answer 6

Produced by: Pancreas
Site of Action: Small intestine
Optimum pH: Basic
Digestion: Protein + H2O –> peptides

Question 7

Peptidases (protein digestion)

Answer 7

Produced by: Small intestine
Site of Action: Small intestine
Optimum pH: Basic
Digestion: Peptide + H2O –> amino acids

Question 8

Nuclease (nucleic acid digestion)

Answer 8

Produced by: Pancreas
Site of Action: Small intestine
Optimum pH: Basic
Digestion: RNA and DNA + H2O –> nucleotides

Question 9

Nucleosidases (nucleic acid digestion)

Answer 9

Produced by: Small intestine
Site of Action: Small intestine
Optimum pH: Basic
Digestion: Nucleotide + H2O –> base + sugar + phosphate

Question 10

Lipase (fat digestion)

Answer 10

Produced by: Pancreas
Site of Action: Small intestine
Optimum pH: Basic
Digestion: Fat droplet + H2O –> monoglycerides + fatty acids