Question: 116: 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
Answer: Option (4)
Explanation:
Carrier proteins help in the transport of substances across the cell membrane.
When a single type of molecule is transported across the membrane, the process is called uniport.
When two different molecules are transported in opposite directions across the membrane,
the process is called antiport.
When two different molecules are transported simultaneously in the same direction across the membrane, the process is called symport.
In symport, the movement of one molecule down its concentration gradient provides energy for the transport of the second molecule.
The term transport is a general term and does not specify the direction or number of molecules involved.
Therefore, the correct answer is symport.
[KClientError] [REQ_ERR: OPERATION_TIMEDOUT] [KTrafficClient] Something is wrong.