Which are common means by which patients acquire healthcare-associated infections?
a. contaminated food
b. resident biota infections
c. fomite transmission
d. infections of damaged tissue
b. resident biota infections
c. fomite transmission
d. infections of damaged tissue
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On Gram stain, which organism appears thin in the center and thicker at the ends?
a. Agrobacterium yellow group b. CDC groups EO-3 and EO-4 c. E. meningoseptica d. E. brevis
The membrane attack stage of the complement cascade involves
A. initiation of the cascade. B. C1q binding to surface receptors on a membrane. C. a ring-shaped protein digesting holes in bacterial cell membranes and virus envelopes. D. the production of inflammatory cytokines. E. the cleaving of C3 to yield C3a and C3b.
Which of the following carries amino acids to ribosomes, where amino acids are linked into the
primary structure of a polypeptide? a. mRNA b. tRNA c. hnRNA d. rRNA e. rDNA
In a severe allergic reaction, a person's tongue can swell up, effectively blocking the air passageways. An emergency procedure can be performed to restore airflow. Basically, a hole is cut into the passageways below the blockage to allow air to flow
into the lungs. What passageway would be best for the surgical hole? What will be an ideal response?