1. Cellular Respiration, Photosynthesis or Seed Germination
Practice IA

2. PreLab Research Question Hypothesis Biological Significance
Variables Table
Materials
Procedure

3. Dissolved Oxygen Measure change in oxygen in water
C. resp or photosynthesis
Add algae or Elodea to water
2 days

4. Carbon Dioxide sensor Photosynthesis or C. respiration
Germinating peas
Spinach leaves
Little or no liquid
Plastic bottles

5. Gas pressure Sensor Fermentation Yeast Test tubes Water baths
On directions – don’t need the oil

6. Ethanol Sensor Fermentation Yeast Use flask Uses hot plate too
Only four

7. Chromatography

8. Elodea and pH probe pH probe
Carbon dioxide in water produces carbonic acid
Cellular respiration or photosynthesis

9. DPIP Lab Spinach extract Experiment has to occur in a cuvette
Uses colorimeter

10. Elodea bubble count Elodea Test tube
Count bubbles released from the stem

11. Algae Beads and pH change
Similar to DPIP
Color change indicates use of CO2 or production of CO2
Uses spectrophotometer
Experiment in Cuvette

12. As a group
Create a list of variable that will impact photosynthesis and/or cellular respiration
No two people in your group can have the same experiment

13. Seed Germination