m3- unit 1

• Macronutrients


  Constitute over 95% of cell dry weight and are needed in relatively large quantities
• Micronutrients

  • Manganese
  • Zinc
  • Cobalt
  • Molybdenum
  • Nickel
  • Copper
• Parameters to classify culture media

  • Chemical constituents
  • Physical nature
  • Function
• Growth


  Orderly increase of all the components of an organism, not just some constituents
• Phases of bacterial growth curve

  • Lag phase
  • Logarithmic/exponential phase
  • Stationary phase
  • Death/decline phase
• Psychrophiles


  Grow below 20°C, often well below 0°C