Materials List: Observing Cell Structures With Fluorescent Dyes

Each group needs:

  • microscope with light options: black light, base white light, or both
  • 4 slides
  • 4 slide cover slips 
  • 4 onion membrane samples
  • scalpel
  • tweezers
  • Onion Cell Lab Sheet (1 per student)
  • graph paper (1 per student)
  • 2 sets of personal protection equipment (1 per student)
  • 2 pairs of rubber gloves (1 per student)

To share with the entire class:

  • onion – cut into 2-cm strips
  • 6 - 50 mL beakers
  • 6 pipettes (one for each sample, except the food dyes)
  • 2 fl. oz iodine solution (laboratory grade)
  • 1 tbsp turmeric
  • 20 mL isopropyl alcohol
  • 2 fl. oz tonic water
  • 2 fl. oz energy drink
  • 2 fl. oz soft drink
  • box of food coloring samples (0.3 fl. oz; box of 4 colors)
  • 10 fluorescent markers (all same color)
  • 2 pairs of rubber gloves for the teacher
  • pliers (for teacher to remove fluorescent marker ink pad)
  • kitchen cutting knife (optional; for teacher only)
  • tablespoon
  • box of tissues
  • 3-5 black lights
https://www.teachengineering.org/activities/view/rice-2544-cell-structures-fluorescent-dyes-activity