Which of the following statements about human immunodeficiency virus is FALSE?
A. HIV is spread by the exchange of infected body fluids.
B. HIV is a retrovirus.
C. The virus first attacks an individual’s immune system.
D. An infected person remains symptomatic after the viral load set point is established.
D. An infected person remains symptomatic after the viral load set point is established.
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Some species of fungi are part of the normal microbiota or normal microbial flora of a host organism. How does the immune system differentiate between "good" fungi and "bad" fungi?
A. Good fungi only reside in certain places and thereby will not trigger an immune response. B. Good fungi are weakly virulent, while bad fungi are highly virulent. C. Fungi are differentiated based on their cytokine production. D. Low levels of any fungi are ignored by the immune system. E. PAMPs such as motifs in peptidoglycan are used to mark fungal cells.
The pyloric sphincter initiates the gag reflex to prevent food from entering the pharynx
Indicate whether the statement is true or false
Agility, body composition, and coordination are all components of skill-related fitness
Indicate whether the statement is true or false
Smokeless tobacco consists of chewing tobacco and
a. bidis c. pipe tobacco b. snuff d. cigars