A nosocomial infection is
A) Always present but inapparent at the time of hospitalization.
B) Always caused by medical personnel.
C) Acquired during the course of hospitalization.
D) Always caused by pathogenic bacteria.
E) Only a result of surgery.
C) Acquired during the course of hospitalization.
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Ephedrine is a stimulant that is derived from a member of the phylum
A. Hepaticophyta. B. Gnetophyta. C. Pterophyta. D. Cycadophyta.
Innate immunity begins when ____
a. triggered by adaptive immunity b. PAMP receptors bind to antigen c. white blood cells start dividing d. complement proteins are released e. PAMPs are detected
Tumor suppressor genes can be split into the two categories of ________ and ________ genes
Fill in the blank with correct word.
In the island biogeography model, species richness is a balance between
A. immigration and extinction. B. speciation and extinction. C. inhibition and facilitation. D. tolerance and inhibition. E. emigration and speciation.