Carbon Cycle

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Growth of Microorganism Growth of Microorganisms Part 2 Lag phase Exponential phase Deceleration Phase Acceleration Phase Stationary Phase Death Phase Mycelial Growth Synchronous Growth Fed Batch Culture Continous Culture Distribution of Microorganisms Environmental Factors affecting Microbial Growth Biogeochemical Cycling of Elements

Carbon Cycle

Carbon Cycle - Carbon dioxide, either in the atmosphere or in solution in surface waters is the major source of carbon for living organisms. It is converted to organic form by the autotrophs which use it as sole carbon source. The most important in this conversion are the photosynthetic autotrophs (seed plants on land and algae in water) that carry out oxygen producing type of photosynthesis.

Photosynthetic and chemosynthetic autotrophs, chiefly bacteria also play role in this conversion. Organic carbon autotrophs.
A small part of the inorganic carbon is also present in the reduced form of methane, in some specific habitat conditions.

Methane can be utilised as the sole source of carbon and energy by a special group of aerobic bacteria, methane utilising bacteria which convert it into organic carbon.

The total CO2 in the atmosphere would be completely exhausted with this rate of conversion of inorganic to organic carbon. However, the reverse process of mineralisation of organic to inorganic carbon by the activity of heterotrophs prevents this exhaustion. The major end product of mineralisation is CO2, though some methanogenic bacteria also produce CH4 by anaerobic respiration and fermentation.

The conversion of inorganic to organic carbon by plants and by autotrophic microbes is relatively straightforward.

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Growth of Microorganisms Part 2 Carbon Cycle Nitrogen Cycle Sulphur Cycle Chemical Composition of E.Coli Cell Carbon Requirement of Microorganisms Nitrogen & Sulphur Requirement of Microorganisms Microorganisms Classification Based on Oxygen Requirement Microorganisms Nutritional Classificatione Carbon & Energy Source Microorganisms Classification

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