Tonicity refers to
a. the total concentration of solutes in fluids
separated by a selectively permeable
membrane.
b. the pressure exerted by the fluids
surrounding a cell.
c. the amount of negative versus positive
charges of the molecules and ions in a
solution.
d. how able a cell is to resist changes in solute
concentrations without bursting or
shrinking.
e. the ease with which solutes can cross a
particular cell membrane
A
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