Musuq
Forum Guru
Topics: 103
Posts: 425
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The rate of transport of a substance through a membrane depends on the concentration of the drug only. When the extracellular concentration of the agent exceeds 10 mM, no further increase in the rate of uptake is observed. Structurally similar compounds pass through the cell membrane, but at a lower rate. Ouabain, an inhibitor of Na+/ K+ ATPase, fails to inhibit transport. Which of the following is the most likely mechanism by which this agent enters cells?
A) Antiport
B) Facilitated diffusion
C) Ion-gated coupling
D) Simple diffusion
E) Symport
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| docarchana
Forum Guru
Topics: 70
Posts: 515
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B - unable to find the link.
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