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Microbial Growth - Coggle Diagram

- - - - Psychrophiles: Cold-loving
      - Mesophiles: Moderate temp (body temp pathogens)
      - Thermophiles: Heat-loving
      - Danger zone: 40 F - 140 F (4C - 60C)
    - - Bacteria: 6.5-7.5
      - Fungi: 5-6
      - Buffers: maintain neutral pH
    - - Halophiles tolerate high salt (e.g., S. aureus)
  - - - Heterotrophs: From organic compounds
      - Autotrophs: From CO2
- - - - Counts living cells only
      - Time: 24-48 hrs
    - - Quick, counts live & dead
      - Needs high concentration
    - - For low bacterial counts in liquids
  - - - Measures absorbance
      - Requires 10^7-10^8 cell/mL