Spontaneous development of resistance to a particular antimicrobial is difficult if the drug
A. binds to several sites on the target molecule.
B. targets several different molecules.
C. affects only one molecule.
D. affects the plasma membrane.
E. binds to several sites on the target molecule AND targets several different molecules.
E
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What is the active site? a. The bottom of the substrate
b. The site on the enzyme in which the substrate attaches. c. The site on the reactant in which the enzyme attaches. d. The surface of the enzyme. e. The site on the substrate in which the enzyme attaches.
In the internal leaf structure shown above, the item labeled "4" is
a. a vascular bundle. b. spongy mesophyll. c. epidermis. d. a stoma. e. palisade mesophyll.
Why are cDNA libraries desirable for the expression of eukaryotic genes in prokaryotes? What will be an ideal response?
How does Rb control the entry of the eukaryotic cell into the S phase?
What will be an ideal response?