Classification of organism based on Nutritional requirements i) Carbon Autotrophs. Heterotrophs. phototrophs 11) Energy Chemotrophs ii) Hydrogen /electrons Lithotrophs (organism can extract as from Inorganic substance). Organotrophs (organism can extract is from. organic substance). Major Nutritional types of Microorganisms Nutritive type. Energy E/carton Representative organism photo lithotrophic. light Cyanobacteria, autotrophy. Inorganic mastercate is Purple and green sulfur W2 bacteria organotrophic photo contestrophes light purple and green non- organic heterotrophy preformed organic molecule sulfur bacteria. chemo lithotrophic chemical inorganic e Sulfur oxidising bacteria, autotrophy CO2 ron bacteria. Nitrifying bacteria, Hydrogen bacteria chemo organo trophic. chemical (organic) Pathogenic organism heterotrophic Organic e protozoans.
Mixotrophic organism - Both autotrophic and heterotrophic mode of nutrition. - other nutrients include I Nitrogen - Purines and Pyrimidina Aminoacids. Cofactors. I Directly incorporated from Aminoarids - Nitrogen acquired by in By means of enzymes like Organism dehy. glutamate gratters and gutanate synthase glutanale dehydrogram glutanire Synthesis and get 2 Nitrate Redn.- Nithagen Nitrate Red Nitrate Redn Pathway synthase. eg. Phototroph ic Nitrate Nitrite nitrite Nitric oxide Nitrais Chemotroph reductar reductar acredict Nitrous nitrous oxide oxide reductase. Nitrogen 3 N2 fixation - Admorpheric H Promotes growth PGPR AID . of plant plant grain Abmosphere M2. Reduced NHGTION.] promoting Rikobium Both organism and plant will eg Cyanobuvera get benefit Dhizober Symbiotic relationship.
II phosphorous - Nucleic acids. Incell membrane phopholids are present Sulphur - In aminoacide eg Cystoin and methionine. Growth factors It Promotes growth but the Some organism cannot synthesise this. 1 Aminoauds 2 Purines and Pyrimidines permane 3 Vitamins. Protein- Nutrient Uptake Mechanism uptake of Nutrients) approved of spread Intrinse ports .) Ipidaniror Cell be membrane is selectively permeable eukaryater protein Cell membrane has glycolipids, Cytoskeleton, cholestrol. to maintain integrity/ attached to hopanoide (prokacyota) , peripheral protein, rightness. lipid .) Peripheral. domease protein Transport Mechanism Diffwer - from higher to lower wnc (simple diffusion), I passive eg:C02,02/H2O Active facilitated.. - with Carrier help molecule of (permeases) H will pumit molocule carrier conformational change happens. Use of ATP. proton (H+) proton motive force. from low high also it works. eg ABC binding transport, PTS transport