Nosocomial infections are acquired in a hospital from surgical procedures, equipment, personnel, and often involve drug resistant microorganisms.
a. true
b. false
Ans: a. true
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Motor neurons release the neurotransmitter acetylcholine (ACh) and acetylcholinesterase degrades ACh in the synapse. If a neurophysiologist applies onchidal (a naturally occurring acetylcholinesterase inhibitor produced by the mollusc Onchidella binneyi)
A) paralysis of muscle tissue B) gradual loss of resting potential C) convulsions due to constant muscle stimulation D) decrease in the frequency of action potentials E) no effect
Your physician has requested a test that involves radioactive iodine. This material will be injected and monitored to watch for normal rates of uptake. Test results reveal that the rate of uptake is abnormal. Which hormone would you predict to be outside of a homeostatic range?
A. Cortisol B. Growth hormone C. Insulin D. Thyroid hormone E. Atrial natriuretic peptide
The mutation that causes sickle cell disease
A) occurs in the same gene that, when mutant in a different way, causes beta thalassemia. B) deletes two contiguous DNA bases. C) results in a single DNA base change that does not alter the encoded amino acid. D) changes a glutamic acid to a valine in the alpha globin gene.
TLRs attach to all of the following EXCEPT
A) AMPs. B) flagellin. C) LPS. D) PAMPs. E) peptidoglycan.