Observe an Onion Cell Under a Microscope
ObjectiveTo see real plant cells and identify their parts.
MaterialsAn onion, a knife, forceps, a glass slide, a cover slip, a microscope, and iodine solution if available.
MethodCut the onion in half and peel off a very thin, transparent layer from the inside of one piece. Place it flat on a slide, add a drop of iodine solution if available, and cover it with a cover slip. Look at it under the microscope.
ConclusionDraw what you saw. Could you find the cell wall, cell membrane, and nucleus in your drawing?