MICHAEL ABBEY / SCIENCE PHOTO LIBRARY MICHAEL ABBEY / SCIENCE PHOTO LIBRARY
Red onion cells in hypotonic solution. Hypotonic solutions contain low concentration of solute relative to the cells' cytoplasm. When the cells are placed in a hypotonic solution, the water diffuses into the cells, causing the cells to become turgid (swell). Series, 2 of 3 (see 3Q3352 and 3Q3351 for isotonic and hypertonic solutions).
Model release not required. Property release not required.