Lunes, Setyembre 26, 2011

Bacteria

Bacteria-these are the single celled organisms that are found everywhere.
Types of Bacteria:
  • According to SHAPE:
  1. cocci-sphere shaped bacteria
    2. Streptococci bacteria
  2. bacilli-rod shaped bacteria
    3. Lactobacilli bacteria
  3. spirilla-spiral shaped bacteria


Spirillum bacteria
  • According to AMOUNT OF PEPTIDOGLYCAN present
  1. Gram-positive-It contains more peptidoglycan and has a less complicated structure
    2. A gram-positive bacteria that is stained violet
  2. Gram-negative-It contains less peptidoglycan and has a more complicated structure
A gram-negative bacteria that is stained red
  • According to OXYGEN REQUIREMENT
  1. Aerobic-requires oxygen for them to survive
    2. Aerobic bacteria
  2. Anaerobic-does not need oxygen for survival
    3. Anaerobic bacteria
  3. Facultative-are bacteria that may live with or without oxygen to survive
Facultative bacteria
  • Heterotrophic and Autotrophic bacteria
  1. Autotrophic-obtain the carbon it needs from carbon dioxide
  2. Heterotrophic-obtain carbon and/or sugar from their surroundings







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