Question
Define Uniport, Symport and Antiport. Do they require energy?
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Answer
Uniport is one sided movement of a substance through the cell membrane independent of other solutes. Symport and antiport are two types of cotransport. Symport is simultaneous movement of two or more solutes across cell membrane in the same direction. Antiport is simultaneous movement of two solutes in opposite directions across the cell membrane. 
Uniport, symport and antiport are types of facilitated diffusion which do not require energy. Similar types of passage also occur in case of active transport where energy is required.
Uniport, symport and antiport are types of facilitated diffusion which do not require energy. Similar types of passage also occur in case of active transport where energy is required.Need a full question paper?
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