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Nutrition
Sources of Nutrition
Sources of Nutrition
Mineral ions
Miscellaneous nutrients
100
A process of acquiring nutrients from the environment and using them for metabolism and growth
Nutrition
100
Contain only C and H; usually the product of living things (methane, carbs, lipids)
Organic nutrients
100
Used for cell respiration and redox reaction 
Oxygen
100
Protein synthesis and membrane function
Potassium 
100
Mineral ions, Trace elements, and Growth factors
Miscellaneous Nutrients
200
Can not be made by a cell; must be obtained from the environment
Essential Nutrients
200
Need organic carbon source; depend on other life forms. Need proteins, sugars, lipids
Heterotrophs ( in carbon)
200
Maintains pH and forms H-bonds in between molecules
Hydrogen 
200
Cell transport
Sodium
200
Some trace elements encourage bacterial growth-other types of metal ions can be toxic to bacteria. 
Trace elements
300
Required in large amounts (C,H,O); play a role in cell structure/metabolism. 
Macronutrients
300
Use inorganic carbon source (Usu. CO2) to create organic carbon compounds
Autotrophs (in carbon)
300
Used to make ATP, nucleic acid, phospholipids (and used to build those same molecules) 
Phosphorous 
300
Stabilizes cell wall; endospore formation
Calcium
300
Essential organic compounds, must be obtained from the environment
Growth factors
400
Required in small amounts (trace elements); involved in enzyme function/maintenance of protein structure
Micronutrients
400
Used to make amino acids and proteins. 
Nitrogen
400
Used for amino acids and vitamin B synthesis
Sulfur
400
Used to make chlorophyll; stabiles ribosomes and membrane
Mg++
400
Cu, Co, Ni, B
Trace Elements
500
Molecules that contain atoms other than C and H (metals, salts,gases)
Inorganic nutrients
500

Microbes fix N2 into organic compounds like nitrates for other organisms to build amino acids/proteins

Nitrogen Fixation 
500
96% of cell is composed of only 6 elements
CHOPNS
500
For regulation of DNA
Zinc
500
K, Na, Ca, Mg, Z
Mineral ions