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Life Science

  • Human Body: Digestive System Teach the main functions of the digestive system with the help of this infographic. View »
  • Studying Genomes in the Madagascar Forest Using miniPCR® When it’s difficult to bring DNA samples to a lab, why not bring the lab to the samples? Find out how a portable thermal cycler is changing the way a biological anthropologist performs her research. View »
  • Debunking the 4° C Polymerase Chain Reaction (PCR) Myth Do samples need to be refrigerated immediately after PCR? No. You can leave them at room temperature overnight—and much longer! The founders of miniPCR® explore why. View »
  • Eggsploring Enzymes Activity “Why do we need to learn this?” Answering this often-asked student question is easy when it comes to enzymes. Enzymes keep all living organisms alive! Use this enzymes activity to aid your study of digestion. View »
  • Introduction to Prokaryotes: Cyanobacteria In this lab students observe two examples of cyanobacteria and make a simple comparison to a eukaryotic green alga. 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 »
  • Introduction to Prokaryotes: Bacteria What are bacteria? In this introductory lab students make smears of bacteria on microscope slides from pure cultures, perform a simple stain, and observe their stained slides under a microscope View »
  • Bacterial Hydrolysis of Casein In this lab, students culture two bacteria on skim milk agar. The protein casein gives milk its white color. Some bacteria secrete protease enzymes that can hydrolyze casein. When these bacteria are grown on skim milk agar a clear area develops around the colonies, indicating that casein has been hydrolyzed into its component amino acids. View »
  • Human Body Systems FREE resources for teaching your students about human body systems. View »
  • Introduction to Sterile Technique In this lab, students practice transfer of a bacterial culture using sterile technique. 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 »
  • The Dogfish Shark—Structure and FUNction! Use this simple guide to connect form and function during your next dogfish dissection activity. View »
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