| Column I | Column II | ||
| A. | Symport | 1. | Two types of molecules move in opposite direction |
| B. | Aritiport | 2. | Molecule moves across a membrane independent |
| C. | Uniport | 3. | Two types of molecules cross the membrane in same direction |
A) A-3, B-2, C-1
B) A-3, B-1, C-2
C) A-1, B-2, C-3
D) A-2, B-3, C-1
Correct Answer: B
Solution :
Some carrier proteins allow transport only if two types of molecules move together, i.e., transport. Transport is of two types Symport in which two types of molecules cross the membrane in the same direction. Antiport in which two types of molecules moves in opposite direction. When a molecule moves a membrane independent of other molecule, the process is called uniport.
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