81.The predominant site of dietary fat hydrolysis is which of the following parts of the gastrointestinal tract?

a.mouth

b.stomach

c.small intestine

d.large intestine

82.What is the term for spherical complexes of emulsified fats found in the intestines?

a.micelles

b.chylomicrons

c.hydrophilic fatty acids

d.pinocytes

83.How is soluble fibre in the diet thought to help lower blood cholesterol level?

a.Soluble fibre denatures cholesterol in the stomach.

b.Soluble fibre hydrolyzes cholesterol in the intestinal tract.

c.Soluble fibre traps cholesterol in the intestinal tract and thus inhibits its absorption.

d.Soluble fibre enhances excretion of bile leading to increased cholesterol turnover.

84.After a meal, most of the fat that eventually empties into the blood is in the form of particles known as which of the following?

a.micelles

b.chylomicrons

c.low-density lipoproteins

d.very-low-density lipoproteins

85.After changing her diet to include a bowl of oatmeal every morning, your aunt Gladys’   total blood cholesterol declines from 6.0 mmol/L to 5.8 mmol/L. Which of the following is the most likely explanation for this effect?

a.Oatmeal is a low-fat food and inhibits the body’s synthesis of cholesterol.

b.Oatmeal is high in complex fibres that inhibit cholesterol-synthesizing enzymes.

c.Oatmeal consumed on a regular basis suppresses the craving for high-cholesterol foods.

d.Oatmeal is high in soluble fibres that trap bile, causing the body to use more cholesterol for bile replacement.

86.Which of the following processes is an example of enterohepatic circulation?

a.chylomicron conversion to LDLs and HDLs

b.recycling of bile from the intestine to the liver

c.hormonal control of pancreatic digestive secretions

d.liver secretion of eicosanoids that promote absorption of eicosanoid precursors

87.Chylomicrons are synthesized within which of the following cells?

a.liver

b.intestinal cells

c.lymphatic system

d.pancreas

88.Which of the following substances is most likely to be absorbed directly from the intestinal cells into the blood?

a.chylomicrons

b.cholesterol

c.phospholipids

d.medium-chain fatty acids

89.Which of the following lipoproteins is largest in size?

a.chylomicron

b.high-density lipoprotein

c.low-density lipoprotein

d.very-low-density lipoprotein

90.Which of the following lipoproteins contains the highest percentage of cholesterol?

a.chylomicron

b.low-density lipoprotein

c.high-density lipoprotein

d.very-low-density lipoprotein