Functional magnetic resonance imaging is used to observe brain function by:
a. examining intracellular second messengers.
b. monitoring gene activation.
c. examining changes in blood flow to different parts of the brain.
d. measuring neurotransmitter-receptor binding effectiveness.
e. measuring hormone levels.
c
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a. canines only b. incisors only c. molars only d. canines and incisors e. incisors and molars
Vitamin ____ is water soluble
a. A b. C c. D d. E e. K
During bacterial conjugation, the recipient cell receives a single-stranded loop of DNA.
a. true b. false
Pyocyanin, a greenish-blue pigment produced by pseudomonads, acts as a virulence factor by
A) digesting lipids in tissues. B) forming a biofilm. C) breaking down reactive oxygen species. D) lysing red blood cells. E) generating reactive oxygen species.