Cellular Respiration in Germinating Peas

  • Describe the three stages of cellular respiration.
  • Explain the roles oxygen and carbon dioxide play in cellular respiration.
  • Prepare and execute an experiment to observe and measure the rate of cellular respiration in both germinating and dormant pea seeds.
  • Analyze data collected using a simple respirometer.

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Materials

  • Garden Peas, 1/4 lb
  • Nonabsorbent Cotton
  • 3 Glass Pipets, 1 mL
  • 3 Flat-Bottom Glass Vials
  • 2 Plastic Graduated Pipets
  • Potassium Hydroxide, 15%, 30 mL
  • 4 Parafilm® Squares
  • 3 Rubber Stoppers with Holes
  • 200 Beads
  • 10 Cotton Balls
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