How many virons per day can the HIV virus reproduce in the human body?
a. between 10,000 and 50,000 virons per day
b. between 50,000 and 200,000 virons per day
c. between 500,000 and 5 million virons per day
d. between 50 million and 200 million virons per day
e. between 1 billion and 1 trillion virons per day
e
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In the lungs, oxygen and carbon dioxide enter the bloodstream through tiny air sacs called ________
A) aortas B) antibodies C) arteries D) alveoli
The MOST common lipids found in food are
A. sterols. B. triglycerides. C. phospholipids. D. glycerols.
Why are people with iron overload at increased risk for infections?
a. Excess tissue iron destroys vitamin C b. Iron-rich blood favors growth of bacteria c. Iron-rich blood impairs the immune system d. Excess tissue iron interferes with antibiotic function
A deficiency of niacin results in __________.
a. rickets b. scurvy c. pellagra d. beriberi