Which of the following properties is observed in the case of facilitated transport? a) highly selective b) transport saturates c) uphill transport d) requires special membrane proteins e) requires ATP energy

Step-by-step solution

In facilitated diffusion special proteins help move substances across membranes without expenditure of ATP energy. Facilitated diffusion cannot cause net transport of molecules from a low to a high concentration – this would require input of energy. Transport rate reaches a maximum when all of the protein transporters are being used (saturation). Facilitated diffusion is very specific: it allows cell to select substances for uptake. It is sensitive to inhibitors which react with protein side chains.