Which statement characterizes the lipase enzymes?
a. Gastric lipase plays a significant role in fat digestion in adults
b. Intestinal mucosal lipase is responsible for most dietary fat digestion
c. Salivary gland lipase (lingual lipase) plays an active role in fat digestion in infants
d. Pancreatic lipase hydrolyzes most dietary triglycerides completely to glycerol and free fatty acids
e. Pancreatic lipase forms emulsified fats from monoglycerides
Q. 2In the digestion of fats, emulsifiers function as ____.
a. enzymes
b. hormones
c. detergents
d. chylomicrons
e. macrophages
Q. 3What part of the gastrointestinal tract is the predominant site of dietary fat hydrolysis?
a. Mouth
b. Stomach
c. Small intestine
d. Large intestine
e. Esophagus
Q. 4Which of the following is a characteristic of cholesterol?
a. It is absorbed directly into the blood
b. It is a precursor for bile and vitamin D synthesis
c. It is not formed in the body when provided by the diet
d. It is found in abundance in tropical fats such as palm oil
e. It has no functions in the healthy body.
Q. 5What term may be used to describe a hydrophobic substance?
a. Lipophilic
b. Lipophobic
c. Glycerophilic
d. Glycerophobic
e. Emulsifiable
Q. 6What is the major source of good cholesterol?
a. Fatty fish
b. Fatty meat
c. Endogenous synthesis
d. Monounsaturated and polyunsaturated fatty acids
e. Dairy foods
Q. 7Which statement describes is a feature of choline?
a. It is a part of lecithin.
b. It is a type of cis-fatty acid.
c. It is a type of trans-fatty acid.
d. It is attached to omega-3 fatty acids.
e. It has a multiple ring structure.
Q. 8About how much cholesterol is synthesized by the liver every day?
a. 100 to 300 mg
b. 300 to 500 mg
c. 500 to 800 mg
d. 800 to 1500 mg
e. 1500 to 2500 mg
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