Mechanical and Chemical Digestion Flashcards
Large molecules resulting from anabolism
macromolecule
A biological catalyst
Enzyme
The molecule acted on by an enzyme
Substrate
Process that happens to nutrients after digestion
absorption
Enzyme that hydrolyzes lipid
lipase
Enzyme that hydrolyzes protein
protease
Enzymes that hydrolyzes starch
amylase
The molecule produced as a result of an enzymatic process
product
proteins are hydrolyzed and absorbed as…
amino acids
lipids are hydrolyzed into and absorbed as…
glycerol and fatty acids
carbohydrates are hydrolyzed into and absorbed as…
monosaccharides
Carbohydrate digestion begins in the…
mouth
Bile salts prepare lipids for digestion by a process called…
emulsification
Lipid digestion begins in the…
stomach
Protein digestion begins in the…
stomach
The reagent used to test for the presence of starch was
Lugols iodine
The reagent used to test for sugar was
Benedicts solution
Three major macromolecules digested in our GI tract
carbohydrates, lipids, proteins
Tubes with no enzyme added act as
controls
at what pH does the enzyme that digests carbohydrates work best at?
neutral
what is the reason we chew food?
to increase surface area
positive test for the presence of sugar is indicated by what colour?
green, yellow, orange, or red
positive test for the presence of starch is indicated by which colours?
blue or black
Enzymes that digest carbs are produced by what organs?
salivary glands, pancreas, and small intestine
enzymes that digest lipids are produced by what organs?
mouth, small intestine, stomach
enzymes that digest proteins are produced by what organs?
stomach, pancreas, small intestine
