PH 0-14 , 7 is neutral

PH 0-14 , 7 is neutral

1. Optimum- highest growth rate

2. Pyschrophiles- cold, 15c°

   • algae, fungai,archea,

3. Mesophile- moderate 20-40°c

   • human pathogens

4. Thermophile

   • compost pile, hot springs

5. hyperthermophiles- grows in water above 80°c lives above 100°c

   • geogemma

6. Netrophil - 6.5-7.5

   • most bacteria ,protozoa and pathogens

7. acidophile

   • chemoatuotrophes prokaryotes

8. alkalinophiles

   • growth of most microbes