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Question

Select the incorrect statement with respect to facilitated diffusion. 


Your Answer
A
Highly selective
Correct Answer
B
Uphill transport
Your Answer
C
Requires special membrane proteins
Your Answer
D
Transport saturates

Solution

The correct option is B Uphill transport
Facilitated diffusion involves downhill (higher to lower concentration) movement of molecules with the help of special membrane proteins. There is a limited number of such proteins in the membrane. So, they show saturation at high concentrations of the molecule transported. These proteins are also highly specific to the substrate they are transporting.

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