Question

When a molecule moves across a membrane independent of other molecules, the process is called (i) Uniport (ii) Symport (iii) Antiport?

• A. i
• B. i and ii
• C. i and iii
• D. ii and iii
• E. iii

Answer 1

Answer: (A)

i

When a molecule moves across a membrane independent of other molecule, it is called uniport.

When two molecules move simultaneously across the membrane in the same direction, it is called symport.

When two molecules move in opposite direction to each other across the membrane, it is called antiport. Thus, the correct answer is A.