CFTR Moves Chloride Ions Out of Cells by Active Transport

Multiple Choice

CFTR moves chloride ions out of cells by active transport.What can be inferred from this statement?

A) Normal initial chloride concentrations are lower on the inside of the cell.
B) Normal resulting chloride concentrations are higher on the outside of the cell.
C) CFTR functions as the cystic fibers attach to and pull chlorides through holes in the membrane.
D) Water will also cross the membrane, with the chlorides, through the CFTR proteins.