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Chapter 7: Islam "The Way of Submission"
NoteStudied by 105 peopleAQA GCSE English Literature: Macbeth - Key Quotes Analysis
NoteStudied by 353 peopleChapter 26: The Age of Anxiety
NoteStudied by 281 peopleFungi Relationships and Interactions
NoteStudied by 8 peopleChapter 20: Reversible Reactions
NoteStudied by 12 people9. Material Impacts
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Topic 2: Cultivation of Bacteria
- Bacteria must be grown on culture media in order to characterize and identify.
- Bacteria require sources of energy, carbon, nitrogen, minerals, and growth factors
- Most bacteria are chemoheterotrophs
- require organic compounds for carbon and energy sources
- Bacteria exhibit a wide range of nutritional requirements, need enriching nutrients
- milk, serum, blood, tomato juice
- Growth factors: organic compounds such as vitamins or amino acids that are incorporated into a cell without alteration
- First bacterial cultures were grown in broth/liquid media - infusions and blood
- Robert Koch attempted to culture bacteria on potato slices when he realized need for solid media.
- Added gelatin to liquid media when some bacteria wouldn’t grow on potato → however, gelatin liqueified under incubation conditons
- Angelina Hess suggested use of agar as solidfying agent
- Today, agar is the most commonly used solidifying agent in culture media
- Aseptic technique is used in microbiology to exclude contaminants
- prevention of unwanted microorganisms in laboratory and medical procedures
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Explore Top NotesNoteStudied by 105 peopleNoteStudied by 353 peopleNoteStudied by 281 peopleNoteStudied by 8 peopleNoteStudied by 12 peopleNoteStudied by 25 people
Chapter 7: Islam "The Way of Submission"
NoteStudied by 105 peopleAQA GCSE English Literature: Macbeth - Key Quotes Analysis
NoteStudied by 353 peopleChapter 26: The Age of Anxiety
NoteStudied by 281 peopleFungi Relationships and Interactions
NoteStudied by 8 peopleChapter 20: Reversible Reactions
NoteStudied by 12 people9. Material Impacts
NoteStudied by 25 people