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Microbiology - Unit 2 Exam

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Termini in questo insieme (7)

  • Protobacteria

    -Is a phylum of gram-negative bacteria discovered by Carl Woese in the 1980s based on nucleotide sequence homology

  • What are the 5 classes of Protobacteria?

    1. Alphaprotobacteria

    2. Betaprotobacteria

    3. Gammaprotobacteria

    4. Deltaprotobacteria

    5. Epsilonprotobacteria

  • Alphaprotobacteria

    -Oligotroughs

    -The taxa chlamidias and rickttsias are obligate intracellular pathogens feeding on the cell of the host

    they are metabolically inactive outside of the host.

    -some can convert atmospheric to nitrites, making nitrogen usable for other forms of life.

  • Betaprotobacteria

    -Eurotrouphs

    -They include human pathogens of the genus Nisseria and Bortadella pertussis

  • Gammaprotobacteria

    -The largest and most diverse group of Protobacteria.

    -Many are human pathogens that are aerobes or facultative aerobes

    -Some are enteric bacteria that maybe coliform or noncoliform.

    -E. coli is the most studied gammaprotobacteria

  • Deltaprotobacteria

    -Make up a small group able to reduce sulfate or elemental sulfur.

    - Some are scavengers and form mixospores with multicellular fruiting bodies

  • Epsilonprotobacteria

    -Make up the smallest group of Protobacteria.

    -genera Campylobacter and Helicobacter are human pathogens