In osmosis, what happens to a cell placed in hypertonic, hypotonic, or isotonic solutions?

• A. Hypertonic causes shrinkage; Hypotonic causes swelling or lysis; Isotonic results in no net water movement.
• B. Hypertonic causes swelling; Hypotonic causes shrinkage; Isotonic water moves in one direction only.
• C. Hypertonic has no effect; Hypotonic has no effect; Isotonic causes lysis.
• D. Hypertonic causes lysis; Hypotonic causes shrinkage; Isotonic draws water in.

Answer: (A)