Cystic fibrosis is a mutation in a gene that codes for a protein that

Cystic fibrosis is a mutation in a gene that codes for a protein that




A. regulates the pH of the extracellular spaces.
B. moves moves chloride ions in and out of cells.
C. moves vesicles along microtubules in the cytoplasm.
D. regulates adhesion between adjacent cels.



Answer: B