If the source patient's blood tests positive for HIV:
A) the exposed individual will receive a one-time injection of immune globulin and will be tested for HIV in 2 weeks.
B) the blood will be assessed for viral load and the exposed individual may be offered a 4-week trial of antiretroviral therapy.
C) the most rapid method for determining if the exposed individual was infected is by assessing his or her lymphocyte count.
D) federal law requires that the exposed individual be placed on antiretroviral therapy and not be allowed to work in a health care setting.
Answer: B) the blood will be assessed for viral load and the exposed individual may be offered a 4-week trial of antiretroviral therapy.
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A male is heterozygous for the trait that produces freckles on the skin, and he has freckles. If he marries a woman who is also heterozygous for freckles, ______ percent of their children are predicted to be freckled. Also, of all their children, ______ percent are predicted to be heterozygous. rev:
A. 100%, 100% B. 75%, 50% C. 75%, 25% D. 50%, 50% E. 100%, 75%
Approximately what percentage of new drugs produced via pharmaceutical research is derived from natural compounds?
a. 75% b. 50% c. 35% d. 10%
How long does the spike of an action potential last?
a. one second b. one millisecond c. one microsecond d. one half second e. one nanosecond
Experimental evidence supporting the chemiosmotic hypothesis was gathered by using artificial vesicles containing a protein that can pump protons in one direction across the vesicle membrane to create a proton gradient
Which protein was used to generate the gradient in a highly controlled manner? (a) cytochrome c oxidase (b) NADH dehydrogenase (c) cytochrome c (d) bacteriorhodopsin