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Graphing Linear Functions
NoteStudied by 12 peopleChapter 11: Thermodynamics
NoteStudied by 184 peopleALL OF HEIMLER'S VIDEOS (APWH) MY COPY
NoteStudied by 140 peopleChapter 11 - Rotational Motion
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Topic 11: Special Media for Isolating Bacteria
- One of the major limitations of dilution techniques used to isolate bacteria is that organisms present in limited amounts may be diluted out on plates filled with dominant bacteria.
- To help isolate organisms found in the minority, various enrichment and selective culturing methods are available that either enhance the growth of some organisms or inhibit the growth of other organisms.
- Selective media: contain chemicals that prevent the growth of unwanted bacteria without inhibiting the growth of the desired organism.
- Enrichment media: contain chemicals that enhance the growth of desired bacteria.
- usually liquid media
- other bacteria will grow, but growth of the desired bacteria will be increased
- Differential media: contain various nutrients that allow the investigator to distinguish one bacterium from another by how they metabolize or change the media with a waste product.
- dyes such as phenol red, eosin, or methylene blue are sometimes included
- products of bacterial metabolism can react with the dyes to produce a color change in the medium
- Eosin and methylene blue dyes in eosin methylene blue (EMB) agar is selective
- inhibit the growth of some bacteria
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Explore Top NotesNoteStudied by 12 peopleNoteStudied by 184 peopleNoteStudied by 140 peopleNoteStudied by 5 peopleNoteStudied by 282 peopleNoteStudied by 2 people
Graphing Linear Functions
NoteStudied by 12 peopleChapter 11: Thermodynamics
NoteStudied by 184 peopleALL OF HEIMLER'S VIDEOS (APWH) MY COPY
NoteStudied by 140 peopleChapter 11 - Rotational Motion
NoteStudied by 5 peopleAP Chemistry Ultimate Guide
NoteStudied by 282 peopleBonding and Reactions Test Study Guide Notes
NoteStudied by 2 people