Facilitated diffusion is characterized by all except: (A) Vmax, (B) Competitive inhibition, (C) Requires energy, (D) Specificity
Answer is C. This process is called passive transpo orfacilitated diffusion, and does not require energy. The solute can move "uphill," from regions of lower to higher concentration. This process is called active transpo, and requiressome form of chemical energy. Ref ganong's review of medical physiology 25e p102