1 / 7

Experiment 3: Microbiology and Experimental Design

Experiment 3: Microbiology and Experimental Design Bacteria and Fungi on a Kitchen Cutting Board (SEM x2,270) Plastic cutting board surface - rod bacteria in a smooth matrix; filamentous bacteria -smooth oval cells; fungal hyphae (orange) with textured spores

ostinmannual
Télécharger la présentation

Experiment 3: Microbiology and Experimental Design

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Experiment 3: Microbiology and Experimental Design Bacteria and Fungi on a Kitchen Cutting Board (SEM x2,270)Plastic cutting board surface - rod bacteria in a smooth matrix; filamentous bacteria -smooth oval cells; fungal hyphae (orange) with textured spores © David Kunkel http://www.denniskunkel.com/

  2. Objective: • to determine whether Dial liquid antibacterial soap kills more Escherichia coli bacteria than SoftSoap non-antibacterial liquid soap

  3. Safety Scanning electron micrograph of E. coli© David Kunkel • The strain of E. coli we are using is not pathogenic. • Nevertheless, use reasonable hygienic precautions • (hand washing, no food). • TAs will discuss sterile technique and equipment.

  4. Important points to remember • Do not start centrifuging until the centrifuge is full or no one else will need it in the near future. Use any centrifuge in the lab. • Come in tomorrow to count your plates. • Do not throw trash in the autoclave bags – they are for items contaminated with bacteria only.

  5. Variability and Significance Mean height of Lakers team: 2.23 meters Std. Dev. of Lakers: 0.25 meters Mean height of Wizards team: 2.28 meters Std. Dev. of Wizards: 0.22 meters Wizards mean is 0.05 meters taller, but that difference is much smaller than the variability (SD) in players.

  6. Mean height of Lakers team: 1.82 meters Std. Dev. of Lakers: 0.25 meters Mean height of Wizards team: 2.48 meters Std. Dev. of Wizards: 0.22 meters Wizards mean is 0.66 meters taller, and that difference is larger than the variability in players.

  7. Next week Don’t forget the first test (Sep. 21-22) • Format: all multiple choice • Review learning objectives • Sample questions on Web page

More Related