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Common nutrient requirements
Dr. Deepak U. Bhusare
Department of Microbiology
D. B. ACS College, Bhokar.
 95% of cell dry weight is made up of a few major elements: carbon,
oxygen, hydrogen, nitrogen, sulfur, phosphorus, potassium, calcium,
magnesium, and iron
Nutrients
Macronutrients Micronutrients
Macronutrients
 The first six (C, O, H, N, S, and P) are components of carbohydrates, lipids,
proteins, and nucleic acids.
 The remaining four macroelements exist in the cell as cations and play a
variety of roles.
1. Potassium (K): is required for activity by a number of enzymes, including
some of those involved in protein synthesis.
2. Calcium (Ca): Among other functions, contributes to the heat resistance of
bacterial endospores.
3. Magnesium (Mg): Serves as a cofactor for many enzymes, complexes with
ATP, and stabilizes ribosomes and cell membranes.
4. Iron (Fe2)and Fe3: Is part of cytochromes and a cofactor for enzymes and
electron-carrying proteins.
Micronutrients
 The micronutrients—manganese, zinc, cobalt, molybdenum,
nickel, and copper.
 Micronutrients are normally a part of enzymes and cofactors, and
they aid in the catalysis of reactions and maintenance of protein
structure.
 Zinc (Zn2) is present at the active site of some enzymes but is
also involved in the association of regulatory and catalytic
subunits in E. coli aspartate carbamoyl transferase.
 Manganese (Mn2) aids many enzymes catalyzing the transfer of
phosphate groups.
 Molybdenum (Mo2) is required for nitrogen fixation, and
 Cobalt (Co2) is a component of vitamin B12.
Nutritional Types of Microorganisms
 Phototrophs use light as their energy source
 Chemotrophs obtain energy from the oxidation of chemical
compounds (either organic or inorganic).
 Lithotrophs (i.e., “rock-eaters”) use reduced inorganic
substances as their electron source.
 Organotrophs extract electrons from organic compounds
Ref: www. Google.com
Thank You…!

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Common Nutrient Requirements

  • 1. Common nutrient requirements Dr. Deepak U. Bhusare Department of Microbiology D. B. ACS College, Bhokar.
  • 2.  95% of cell dry weight is made up of a few major elements: carbon, oxygen, hydrogen, nitrogen, sulfur, phosphorus, potassium, calcium, magnesium, and iron Nutrients Macronutrients Micronutrients
  • 3. Macronutrients  The first six (C, O, H, N, S, and P) are components of carbohydrates, lipids, proteins, and nucleic acids.  The remaining four macroelements exist in the cell as cations and play a variety of roles. 1. Potassium (K): is required for activity by a number of enzymes, including some of those involved in protein synthesis. 2. Calcium (Ca): Among other functions, contributes to the heat resistance of bacterial endospores. 3. Magnesium (Mg): Serves as a cofactor for many enzymes, complexes with ATP, and stabilizes ribosomes and cell membranes. 4. Iron (Fe2)and Fe3: Is part of cytochromes and a cofactor for enzymes and electron-carrying proteins.
  • 4.
  • 5. Micronutrients  The micronutrients—manganese, zinc, cobalt, molybdenum, nickel, and copper.  Micronutrients are normally a part of enzymes and cofactors, and they aid in the catalysis of reactions and maintenance of protein structure.  Zinc (Zn2) is present at the active site of some enzymes but is also involved in the association of regulatory and catalytic subunits in E. coli aspartate carbamoyl transferase.  Manganese (Mn2) aids many enzymes catalyzing the transfer of phosphate groups.  Molybdenum (Mo2) is required for nitrogen fixation, and  Cobalt (Co2) is a component of vitamin B12.
  • 6. Nutritional Types of Microorganisms
  • 7.  Phototrophs use light as their energy source  Chemotrophs obtain energy from the oxidation of chemical compounds (either organic or inorganic).  Lithotrophs (i.e., “rock-eaters”) use reduced inorganic substances as their electron source.  Organotrophs extract electrons from organic compounds Ref: www. Google.com