The property on which the acid-fast stain depends is:
a) affinity for basic dyes
b) capability for reducing silver
c) failure to stain with a dye other than basic fuchsin
d) ability to resist decolorization with dilute acids
Answer: d) ability to resist decolorization with dilute acids
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Tyrone has Gaucher disease. He receives recombinant glucocerebrosidase every other week in an infusion to prevent the symptoms. This treatment is an example of
A) gene therapy. B) gene transfer. C) enzyme replacement therapy. D) pharmacological chaperone therapy. E) substrate reduction therapy.
What kind of habitat does a C4-pathway plant favor?
A) Wet and cloudy B) Cool and moist C) Totally aquatic D) Cool and dry E) Hot and dry
The most serious form of pelvic inflammatory disease (PID) causes
a) septicemia. b) salpingitis. c) toxemia. d) pyelonephritis.
Host specificity of a virus is due to
A. particular genes that it shares with the infected cell. B. the presence of an envelope. C. differences in size between the virus and the host cell. D. the presence or absence of a cell wall on the host cell. E. interactions between viral and cellular surface molecules.