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Dietary fiber seems to inhibit the development of colon cancer by

The force that causes air to move into the lungs during inspiration is supplied by

As a group, the B vitamins are

Treatment with antibiotic drugs, which interfere with the activities of intestinal bacteria, is sometimes followed by a deficiency of

The right lung is composed of which lobes; the left lung is composed of which lobes.

Cholesterol that has been removed from the blood is excreted as a component of bile.

The condition associated with lack of intrinsic factor and decreased absorption of cyanobalamin is

Dietary lipids are required to provide

Microorganisms removed from incoming air by sticky mucus are most likely to be destroyed by

All of the essential amino acids must be present in the body at the same time for growth and tissue repair because