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Cards In This Set
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What is the element that all bacteria require to build organic molecules?
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Carbon
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What is an Autotroph?
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(feed-self) an organism that utilizes INORGANIC carbon, CO2 as their source of carbon.
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What kind of bacteria are examples of Autotrophic Members of the Domain Bacteria?
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Cyanobacteria
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What do Cyanobacteria use CO2 for?
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For photosynthesis, to synthesize their own carbs
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What are Heterotrophic organisms?
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Cannot synthesize organic molecules from CO2, they must use preformed ORGANIC molecules in their environment as carbon sources
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Are most members of the Domain Bacteria considered Autotrophs or Heterotrophs?
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Heterotrophs
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What is a fastidious organism?
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One that requires a variety of growth factors and nutrients from the environment and will not grow well if these factors are not present
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In order to cultivate bacteria in a lab, what do we use?
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Media
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What varies from one media to another?
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The chemical content
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What are the 2 catergories of media?
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Complex (undefined) or a Chemically defined medium
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What does a complex medium use?
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Preparations of extracts from other organisms. Extracts are not chemically definable (that is, the extract amount of each component in an extract is not known)
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Where are the extracts for Complex Mediums found?
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Animals, plants or yeasts
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Name 2 agar that are examples of commonly used Complex Media.
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Yeast Extract and Brain-Heart infusion Agar
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What other things can be used for Complex Media?
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Milk and Peptone
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Complex or undefined media are rich in what?
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Nutrients and support a range of bacterial growth
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