CONCEPT - OCEAN MICROBES
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Students collect water samples, plate the samples on suitable agar, and count bacteria colonies present in each sample to compare and contrast the types of bacteria living in a variety of aquatic environments.
In this activity, students mix mud, water, a carbon source, and a sulfur source together in a clear bottle to create a stratified “column” of bacterial communities. Activity requires time to set up in the classroom as well as periodic observations as the "column" stabilizes (4-6 weeks)
Students conduct “virtual labs” to explore how scientists extract DNA from samples, amplify the DNA (PCR/Polymerase Chain Reaction), and study the DNA (gel electrophoresis).