First slide

Means of Transport

Question

Transport proteins that simultaneously move two molecules across a membrane in the opposite direction are called-

Easy

A

Uniport
B

Antiport
C

Symport
D

Diffusive ports

Solution

Some carrier or transport proteins allow diffusion only if two types of molecules move together. In a symport, both molecules cross the membrane in the same direction; in an antiport, they move in opposite directions. When a molecule moves across a membrane independent of other molecules, the process is called uniport.

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