Biology Lab Tips for Cell Respiration

  1. Use fresh pea seeds.
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  3. Placing wet, non-germinated peas in vials seems to cause problems with data. To avoid wetting dry peas, determine the mass, volume and hence density of 100 dry seeds (D=M/V). Throw these peas away and then use 25 new, truly dry peas for vial (V=M/D).
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  5. Use Teflon plumbing tape wrapped around pipettes which are inserted in stoppers. Silicon sealant works but can break down.
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  7. Make sure that you have 10% extra vials (some may leak).
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  9. Use aluminum roasting pans as water baths.
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  11. Any bean seed may be used.
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Talk with construction companies to find scrap materials that you can get for free and that you can use for your students' biology science fair projects.

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