09-10-2009, 09:27 AM
Of the following characteristics, which is unlikely to be associated with the process of facilitated diffusion of drugs?
A. The transport mechanism becomes saturated at high drug concentrations
B. The process is selective for certain ionic or structural configurations of the drug
C. If two compounds are transported by the same mechanism, one will competitively inhibit the transport of the other
D. The drug crosses the membrane against a concentration gradient and the process requires cellular energy
E. The transport process can be inhibited noncompetitively by substances that interfere with cellular metabolism
A. The transport mechanism becomes saturated at high drug concentrations
B. The process is selective for certain ionic or structural configurations of the drug
C. If two compounds are transported by the same mechanism, one will competitively inhibit the transport of the other
D. The drug crosses the membrane against a concentration gradient and the process requires cellular energy
E. The transport process can be inhibited noncompetitively by substances that interfere with cellular metabolism