Why would an efflux pump for penicillin located on a bacterial cell membrane not be effective at providing resistance to the drug?
a. The efflux pumps would not stop penicillin from blocking metabolic pathways.
b. There are fewer efflux pumps on the cell membrane.
c. The cell membrane is the target of penicillin.
d. Penicillin disrupts the cell wall, which is located outside of the cell membrane.
Answer: d. Penicillin disrupts the cell wall, which is located outside of the cell membrane.
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What is a key difference between autotrophs and heterotrophs?
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Science differs from other disciplines, such as history and the arts, because science relies on
A) observations. B) theories. C) facts. D) testing explanations.
The RhoGAM shot given to Rh-negative mothers with an Rh-positive fetus is an example of what type of immunity?
A. nonspecific B. general C. neutral D. active E. passive
In the Kinyoun acid-fast staining method, ______ replaces _____ in the primary stain solution
a. increased phenol; heat b. heat; increased phenol c. mycolic acid; heat d. carbolfuchsin; phenol