A patient is diagnosed with an invasive Aspergillosis infection. The antifungal therapy that should be administered is:
a. nystatin.
b. griseofulvin.
c. amphotericin B.
d. fluconazole.
C
Amphotericin B is produced by the actinomycete Streptomyces nodosus. It is commonly infused intravenously to treat deep-seated fungal infections (e.g., invasive aspergillosis), as well as those caused by Candida spp., Cryptococcus, and members of the Zygomycetes family.
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Polymers are synthesized by ________ reactions and broken down into their constituent monomers by ________ reactions
Fill in the blank(s) with the appropriate word(s).
Why do plasmids make such excellent cloning vectors?
a. They are small and circular. b. They each have hundreds of restriction endonuclease cut sites. c. They replicate independently of the chromosomal DNA. d. They have uracil instead of thymine.
In a scientific experiment, the investigator measures the response of the ________ variable(s).
A. dependent and independent B. control group C. dependent D. standardized
What would happen to people exposed to a chemical warfare agent that blocked acetylcholine from binding to muscle receptors?
A) Action potentials would be continuously generated, causing convulsive muscle contractions. B) Muscle contractions would be prevented, causing paralysis. C) Muscle contractions could still occur, but relaxation of the muscle would be impaired. D) Action potentials would be continuously generated, causing convulsive muscle contractions; muscle contractions would then be prevented, causing paralysis.