Digestion Vocabs + Color Indicator

Question 1

Pepsin

Answer 1

Proteolytic enzyme secreted in active form (pepsinogen) by chief cells in tummy

Question 2

Biuret reagent (definition)

Answer 2

A chemical test that detects the presence of peptide bond (protein)

Question 3

Biuret reagent (colors)

Answer 3

Blue - undigested protein
Purple - + amino acid

Question 4

Pancreatic lipase

Answer 4

Enzyme digest triglycerides into monoglycerids & free fatty acids

Question 5

Bile salts

Answer 5

Emulsify lipids

Question 6

Phenol red (color)

Answer 6

Pink - no lipid digestion
Red/orange - some digestion
Yellow - significant lipid digestion

Question 7

Lugol’s iodine (definition + color)

Answer 7

Test for starch
Blue - + starch
Amber - no starch

Question 8

Benedict’s solution (definition + color)

Answer 8

Test for sugar
Blue - no sugar
Non blue - sugar

Question 9

Emulsifications

Answer 9

Separation of large aggregates of fat into smaller droplets

Question 10

Starch

Answer 10

A form of carbohydrate; polysaccharide

Question 11

Salivary amylase

Answer 11

Digest starch into maltose