Assume that a membrane that is permeable to Na+ but not to Cl- separates two solutions. The concentration of sodium chloride on side 1 is much higher than on side 2 . Which of the following ionic movements will take place?
a. Na+ will move until its concentration gradient is dissipated (i.e., until the concentration of Na+ on side 2 is the same as the concentration of Na+ on side 1).
b. Cl- will move down its concentration gradient from side 1 to side 2.
c. a membrane potential, negative on side 1, will develop.
d. a membrane potential, positive on side 1, will develop.
e. more than one of these answers.
C
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