Which of the following statements above facilitated diffusion is incorrect? 

1.  Special proteins of the membrane help in this process 
2.  Porins are involved in this process
3.  Movement of the molecule occurs against the concentration gradient 
4.  ATP is not required for this process 

Subtopic:  Facilitated Diffusion |
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When a carrier protein facilitates the movement of two molecules across the membrane in same direction, it is called :
1. Uniport
2. Transport
3. Antiport
4. Symport
Subtopic:  Facilitated Diffusion |
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