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Where can we find bacteria?

Where can we find bacteria? . Lab Today . Bacteria and fungi have been growing for 6 days We will look at what grew Make observations Reassess hypothesis Make conclusions Make health recommendations. Safety. Keep the Petri dish closed Don’t open it or touch the samples. Observations .

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Where can we find bacteria?

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  1. Where can we find bacteria?

  2. Lab Today • Bacteria and fungi have been growing for 6 days • We will look at what grew • Make observations • Reassess hypothesis • Make conclusions • Make health recommendations

  3. Safety • Keep the Petri dish closed • Don’t open it or touch the samples

  4. Observations • What does it look like? • Color • Shape – circular, irregular? • Texture – shiny, fuzzy? • Make a drawing of what you see (use color) and describe it in words • Use microscope to get a closer look

  5. Is it bacteria or mold (fungus)? • Bacteria is typically white, cream ,or yellow and fairly circular in shape • Mold can be whitish gray with fuzzy edges or different colors – usually turns a different color in the center (like bulls-eye)

  6. Is it bacteria or mold (fungus)? Bacteria – Bacillus subtilis

  7. Is it bacteria or mold (fungus)? Green mold - Trichoderma harzianum

  8. Is it bacteria or mold (fungus)? Bacteria – Staphylococcus aures

  9. What about yeast? • Yeast looks similar to bacteria but is a fungus • Candida albicans grows as white patches with glossy surface

  10. Make a creative Title page • Give your booklet a title • Make a drawing

  11. Credits • Title slide pictures from: http://www.norcalblogs.com/ and http://biology.clc.uc.edu/Fankhauser/Labs/Microbiology/Coliform_assays/Plates_with_Colonies/Ohio_River_0.2mL_MaC_P8011311.jpg • Other pictures and information from:http://www.sciencebuddies.org/science-fair-projects/project_ideas/MicroBio_Interpreting_Plates.shtml • Picture of Bacteria booklets (Slide 10) by Katherine Pease – booklets made by students in Brian Gabrich’s 7th grade classes at Emerson Middle School

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