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Life Science

  • Bacteria: The Indole Test In this lab students perform a differential test to distinguish bacteria based on the production of indole. Bacteria are grown on media containing tryptophan and then treated with Kovac’s reagent. If they possess the enzyme tryptophanase, the bacteria can metabolize tryptophan into indole, pyruvic acid, and ammonia. View »
  • How to Set Up a Terrarium This video illustrates how to set up a tropical plant terrarium, or low maintenance plant habitat. View »
  • Hydroponics and Indoor Farming Systems Small hydroponic units are becoming more prevalent as classroom teaching tools. Find out why in this brief article. View »
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