Microbiology Study guide for week 2

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Microbiology Study guide for week 2
2012-12-07 18:51:53
Study guide week

Study guide for week 2
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  1. Characteristics of bacteriacelll wall
    • Nearly all bacteria have a cell wall, but in some the wall is G(+) and in others it is G (-).
    • Reproduce asexualy

  2. Bacterial Structure
    • Prokaryotes (can be broken down to 2 types)
    • No nucleus or membrane-bound organelles 
    • Contain ribosomes
    • Single, circular chromosome in nucleoid region
  3. Shapes Are Used to Classify
    • Bacillus: Rod shaped
    • Coccus: Spherical (round) 
    • Vibrio: Comma shaped with flagella 
    • Spirillum: Spiral shape 
    • Spirochete: wormlike spiral shape
  4. Grouping of Bacteria
    • Diplo- Groups of two
    • Strepto- chains
    • Staphylo- Grapelike clusters
  5. Bacteria can become DORMANT by 
    forming an endospore
  6. Which bacteria can form highly resistant, dormant structures called endospores.
    • Gram-positive bacteria, such as Bacillus, Clostridium,
    • Sporohalobacter, Anaerobacter and Heliobacterium
  7. Vegetative cells vs. endospores
    • •Vegetative cells are metabolically active(if metabolic activity stops its dormant not vegetative)
    • •  (taking in nutrients, converting nutrients into energy and biomass, expelling wastes, growing and dividing)
    • Endospores are dormant—metabolically
    • inactive  (but contains the genetic material of the vegetative cell)
  8. How are Archaea and Bacteria different?
    • Archaea: (accient bacteria) dna and anatomy resemble more to eukarya and are prokaryotes living in extreme habitats
    • Bacteria:  Eubacteria (modern bacteria)
  9. Eubacteria
    microscopic single-celled organisms. They are sometimes referred to as the “true bacteria
  10. The Three Domains of Life
    • •Domain Bacteria and domain Archaea
    • –Consist of prokaryotes 
    • Domain Eukarya, the eukaryotes 
    • –Includes the various protist kingdoms and the kingdoms Plantae, Fungi, and Animalia