Elevated LDL concentrations are associated with a high risk of heart disease because they:
a. transport cholesterol and triglycerides from the liver to the tissues.
b. carry excessive amounts of fat that is deposited around the heart.
c. encourage high levels of iron in the blood.
d. take excess cholesterol back to the liver, which increases the production of cholesterol.
Q. 2Which of the following is the body's major metabolic organ?
a. pancreas
b. small intestine
c. gallbladder
d. liver
Q. 3When nutrients enter the blood vessels from the small intestine, they are first transported to the:
a. kidney.
b. liver.
c. cells throughout the body.
d. thoracic duct.
Q. 4The lymphatic system:
a. contains fluid with the same composition as blood.
b. eventually drains into the blood circulatory system.
c. carries chylomicrons to the intestines.
d. is where metabolism of nutrients takes place.
Q. 5Which of the following is not part of the structure of a chylomicron?
a. phospholipid
b. protein
c. triglyceride
d. water-soluble vitamins
Q. 6After digestion, lipids are packaged for transport as lipoproteins known as:
a. HDL.
b. VLDL.
c. LDL.
d. chylomicrons.
Q. 7After absorption, the larger fats and fat-soluble vitamins are first released into the _____ transport system.
a. excretory
b. mesentery
c. vascular
d. lymphatic
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