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An animal cell placed in a hypotonic solution will

  • A.take in water and may burst
  • B.lose water and shrink
  • C.remain entirely unchanged
  • D.gain solutes but not water

Answer: A

Water enters because the surroundings are more dilute than the cytoplasm, and with no cell wall to resist the rising pressure the membrane may rupture. In the case of a red blood cell this is called haemolysis, and it releases haemoglobin into the surrounding fluid.

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