A red blood cell placed in a beaker of solution immediately begins to swell and ultimately bursts. This occurs because
the cytoplasm of the cell was ____ to the solution in the beaker, which was ____.
a. hypertonic; hypotonic
b. hypotonic; hypertonic
c. hypotonic; isotonic
d. hypertonic; isotonic
e. isotonic; hypotonic
ANSWER: a
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