The ion transporter that moves Na+ and Ca2+ simultaneously in the same direction is an example of which of the following types of transport?
a. Biport
b. Uniport
c. Antiport
d. Symport
ANS: D
When ions are transported in one direction, it is termed symport. There is no such term as biport. Uniport refers to the movement of a single molecule. Antiport refers to the movement of mole-cules in the opposite direction.
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