The multidrug resistant pumps in many bacterial cell membranes cause
A. removal of drugs from the cell.
B. bacterial chromosomal mutations.
C. alteration of drug receptors on cell targets.
D. synthesis of enzymes that alter drug structure.
E. All of these choices are correct.
Answer: A
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The making and breaking of chemical bonds are called
A) entropy reactions B) catalysis reactions C) activation energy reactions D) chemical reactions E) thermodynamic reactions
All of the following animals have placentas EXCEPT
a. kangaroos. b. opposums. c. echidnas. d. koalas. e. wombats.
According to the above figure, which letter corresponds to the area where amino acids are most likely to be reabsorbed?
A. A
B. B
C. C
D. D
E. E
Early symptoms of which STD include flattened, painless chancres at the initial infection site; if left untreated in the
long term, this STD can cause mental illness, blindness, and death?
a. gonorrhea b. syphilis c. chlamydia d. trichomoniasis e. genital herpes