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Differential & Selective Bacteria Growth Media
Review Questions
Virtual Microbiology Classroom of Science Prof Online
Specialized Bacterial Growth Media Review Qus
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SPO VIRTUAL CLASSROOMS
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These multiple choice and true/false questions are designed to help students practice and test their understanding of this topic.
1. Explain the selective nature of MacConkey's Agar. What does MAC grow? What does MAC inhibit?
2. Explain the selective nature of Mannitol Salt Agar. What does MSA grow? What does MSA inhibit?
3. Explain the differential nature of MacConkey's Agar. Differential media have had both a pH sensitive dye and a specific type of food added to the agar. Detail all of the information provided when the bacteria growing cause the pH-sensitive dye to change color and when the bacteria growing do not trigger the color change.
4. Explain the differential nature of Mannitol Salt Agar. Differential media have a pH sensitive dye and a specific type of food. Detail all of the information provided when the bacteria growing cause the pH-sensitive dye to change color and when the bacteria growing do not trigger the color change.
5. If I plate an unknown bacteria on MacConkey's, incubate the plate for 24 hours, and find that a week later there is no bacterial growth, what can I conclude?
6. If I plate an unknown bacteria on Mannitol Salt, incubate the plate for 24 hours, and find that a week later there is not bacterial growth, what can I conclude?
7. What type of clinical samples are typically plated onto Blood Agar?
8. Why plate a sample onto Blood Agar? What clinically useful information would you be trying to gather by doing so?
Page last updated: 2/2015
These are review questions from the Virtual Microbiology Classroom, designed to help students better understand specialized bacterial growth media. They are based on materials that can be found on the Differential & Selective Bacterial Growth Media Lecture Main Page.
You have free access to a large collection of materials used in a college-level introductory microbiology course. The Virtual Microbiology Classroom provides a wide range of free educational resources including PowerPoint Lectures, Study Guides, Review Questions and Practice Test Questions.
