A Symporter Will Transport _____ Across the Cell Membrane

Question

A symporter will transport _____ across the cell membrane.
A) two different ions or molecules in opposite directions
B) two of the same ions or molecules in the same direction
C) two different ions or molecules in the same direction
D) two of the same ions or molecules in opposite directions
E) one specific ion or molecule

Accepted Answer

A symporter is a type of transporter protein that moves two different ions or molecules in the same direction across the cell membrane. This is in contrast to an antiporter, which moves two different ions or molecules in opposite directions, and a uniporter, which moves only one specific ion or molecule. Option B is incorrect because symporters do not transport two of the same ion or molecule.