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Life Science

  • Introduction to Prokaryotes: Archaea In this lab, students are introduced to Halobacterium, a representative of the Archaea, one of the three domains of life (along with Bacteria and Eukarya). View »
  • Hydroponics Using a nutrient-rich water solution and a unique, time-tested approach, you can successfully grow plants with no soil. In a hydroponic system, water does the work. Find out more about this fascinating method and the advantages that make it both appealing and effective. View »
  • Invertebrate Biodiversity and Abiotic Factors Understanding the relationships between biotic diversity and abiotic factors in an ecosystem can be a difficult task. Using soil invertebrates, students can identify both the number of species present in a soil sample and the number of individuals within a species. View »
  • Meet the 12-Spotted Lady Beetle Explore the fascinating life cycle of the lady beetle with the help of this infographic. View »
  • Introduction to Sterile Technique In this lab, students practice transfer of a bacterial culture using sterile technique. View »
  • Maggot Michelangelos: Using Artwork to Gain Behavioral Insight In this activity, students use house fly larvae to answer morphological and behavioral questions—all while creating unique artwork! Students create and test hypotheses, and learn about the complete metamorphosis life cycle. View »
  • Bacterial Hydrolysis of Starch In this lab, students culture two bacteria on potato dextrose agar, which contains starch. When grown on potato dextrose agar, bacteria that can secrete amylase—an enzyme that hydrolyzes starch—create a zone around their colonies in which starch is absent. When the agar is flooded with iodine solution, most of the plate stains dark blue–black, but clear areas are left around colonies that secrete amylase. View »
  • Bacterial Motility In this lab, students perform two exercises that investigate microbial motility. One is on a microscopic level, using the “hanging drop” slide preparation method to directly observe motile cells. The second exercise is on a macroscopic level and involves inoculating motility test media. View »
  • Science Notebook: An Owl Pellet Inquiry This introductory owl pellet dissection is a springboard for teaching the techniques of using a science notebook while having students engage in the scientific practices. View »
  • Butterfly Necklace Use this activity to give students an understanding of the life cycle of the painted lady butterfly. Includes materials list and step-by-step instructions. View »
  • Bacterial Growth on MacConkey Agar In this lab students culture three bacteria on nutrient agar and MacConkey agar and record the results. View »
  • 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 »
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