bacteria media culture examine results laboratory powerpoint

Download Bacteria Media Culture Examine Results Laboratory PowerPoint

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  • About Science Prof Online PowerPoint Resources

    Science Prof Online (SPO) is a free science education website that provides fully-developed Virtual Science Classrooms, science-related PowerPoints, articles and images. The site is designed to be a helpful resource for students, educators, and anyone interested in learning about science.

    The SPO Virtual Classrooms offer many educational resources, including practice test questions, review questions, lecture PowerPoints, video tutorials, sample assignments and course syllabi. New materials are continually being developed, so check back frequently, or follow us on Facebook (Science Prof Online) or Twitter (ScienceProfSPO) for updates.

    Many SPO PowerPoints are available in a variety of formats, such as fully editable PowerPoint files, as well as uneditable versions in smaller file sizes, such as PowerPoint Shows and Portable Document Format (.pdf), for ease of printing.

    Images used on this resource, and on the SPO website are, wherever possible, credited and linked to their source. Any words underlined and appearing in blue are links that can be clicked on for more information. PowerPoints must be viewed in slide show mode to use the hyperlinks directly. Several helpful links to fun and interactive learning tools are included throughout the PPT and on the Smart Links slide, near the end of each presentation. You must be in slide show mode to utilize hyperlinks and animations. This digital resource is licensed under Creative Commons Attribution-ShareAlike 3.0: http://creativecommons.org/licenses/by-sa/3.0/

    Alicia Cepaitis, MS Chief Creative Nerd Science Prof Online Online Education Resources, LLC alicia@scienceprofonline.com

    From the Virtual Microbiology Classroom on ScienceProfOnline.com Image: Compound microscope objectives, T. Port

    Tami Port, MS Creator of Science Prof Online Chief Executive Nerd Science Prof Online Online Education Resources, LLC info@scienceprofonline.com

  • Laboratory Exercise 2b

    Media & Culture

    Examining Colony Morphology & Interpreting Specialized Media

    Images: Mannitol Salt, MacConkey;s & Arm plate, T. Port From the Virtual Microbiology Classroom on ScienceProfOnline.com

  • What am I going to learn from Lab Topic #2?

    Media & Culture You will practice microbial collection

    techniques.

    Define and use aseptic technique in microbial culture and media preparation.

    Use enriched, complex, selective & differential media to culture microbes.

    Describe colony morphology and its relationship to microbial identification.

    Interpret results of microbial growth on various culture media.

    Understand the ubiquitous nature of microbes.

    Image: Chimp brain in a jar, Gaetan Lee From the Virtual Microbiology Classroom on ScienceProfOnline.com

  • Specialized Bacterial Growth

    Media:

    McConkeys, Mannitol Salt & Blood Agar

    Last week you obtained samples of bacteria from the environment and from your body. You plated those samples on TSY and on

    specialized selective & differential media.

    McConkeys = lighter, purplish-pink Mannitol Salt = orangish-pink Blood Agar = very dark red

    Image: McConkeys, Mannitol Salt & Blood Agar specialized media, T. Port From the Virtual Microbiology Classroom on ScienceProfOnline.com

  • MacConkey's (MAC)

    Q: Is MacConkeys selective? Explain. Q: Is MacConkeys differential? Explain.

    Image: McConkeys growing Salmonella on the left, and E. coli on the right, T. Port From the Virtual Microbiology Classroom on ScienceProfOnline.com

    Watch VIDEO:

    How to Interpret

    MacConkeys Agar (MAC)

  • Mannitol Salt (MSA)

    Q: Is Mannitol Salt selective? Explain. Q: Is Mannitol Salt differential? Explain.

    Images: Sterile Mannitol Salt Agar, Positive & negative differential reaction on Mannitol Salt Agar, T. Port From the Virtual Microbiology Classroom on ScienceProfOnline.com

    Watch VIDEO:

    How to Interpret

    Mannitol Salt Agar (MSA)

  • Blood agar (BAP)

    Q: Is Blood agar selective? Explain. Q: Is Blood Agar differential? Explain.

    Images: Beta-hemolysis, Alpha-hemolysis and a sterile plate of Blood Agar, T. Port From the Virtual Microbiology Classroom on ScienceProfOnline.com

    Watch VIDEO:

    How to Interpret

    Blood Agar (BAP)

  • Images: Arm plate, TSY with sample from dish washer, MacConkeys with variety of colonies, all by T. Port

    Microbial Colony Morphology

    From the Virtual Microbiology Classroom on ScienceProfOnline.com

  • Microbial Colony Morphology

  • Record Results on Lab Report #2

    Question #5: Describe results from touch plates and arm plate (TSY).

    a. What is the difference between touch plates 1, 2 and 3? b. Is this what you expected?

    Question #6: Record and interpret results from nasal swab plates (TSY and Mannitol Salt).

    a. Did any of the colonies turn the Mannitol Salt medium yellow? b. What would it mean if they did?

    Question #7: Record and interpret results from throat swab plate (Blood agar).

    a. Do you see Alpha hemolysis? Beta hemolysis? Gamma hemolysis? b. Which hemolysis pattern is bad news?

    Question #8: Record and interpret results of environmental samples, for each quadrant 1 4 (TSY and MacConkeys).

    a. Are MacConkey colonies pink or colorless? b. What does it mean if they are pink?

    Images: Arm plate, Mannitol Salt, Blood

    agar & MacConkeys, all by T. Port From the Virtual Microbiology Classroom on ScienceProfOnline.com

  • When youre done with your

    environmental and clinical plates, put

    them in the discard bin at back of lab.

    From the Virtual Microbiology Classroom on ScienceProfOnline.com

  • Confused?

    Here are links to fun resources that further explain microbiology media & culture:

    Media & Culture Laboratory Main Page on the Virtual Microbiology Classroom of Science Prof Online.

    Germs, music by Weird Al Yankovic. Video by RevLucio.

    Normal Flora webpage, by Douglas F. Fix. Interactive page where you can select an area of the body and learn which normal flora typically colonize that location.

    How to Interpret: MacConkeys (MAC), Mannitol Salt (MSA) and Blood Agar (BAP) videos from Science Prof Online.

    How to Pour Bacterial Growth Media into Petri Dishes, video from Science Prof Online.

    Bacterial growth video and narration, YouTube, Dizzo95..

    Microbial Growth & Metabolism Main Page on the Virtual Microbiology Classroom of Science Prof Online.

    E. coli population growth time lapse video.

    (You must be in PPT slideshow view to click on links.) From the Virtual Microbiology Classroom on ScienceProfOnline.com

  • Are microbes intimidating you?

    Do yourself a favor. Use the

    Virtual Microbiology Classroom (VMC) !

    The VMC is full of resources to help you succeed,

    including: practice test questions

    review questions

    study guides and learning objectives

    You can access the VMC by going to the Science Prof Online website www.ScienceProfOnline.com

    Images: Staph, Giant Microbes; Prokaryotic cell, Mariana Ruiz

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