Everything you need to know about biogeochemical cycling. Some of the most frequently asked exam questions are as follows:- Q.1. What is carbon cycle? Ans: It mainly includes the transfer of CO2 and organic carbon between the atmosphere (the source of inorganic CO2) and hydrosphere (the aqueous envelope of the earth as bodies of water and aqueous vapours) and lithosphere [...]
The below mentioned article provides a note on winogradsky column, explained with the help of a suitable diagram. The Winogradsky column is a glass or clear plastic cylinder with a core of solid or sediment in it. This model system employed to study the growth of specific microorganisms, has been named after a noted Russian microbiologist Sergei Winogradsky. Specific microbial [...]
In this article we will discuss about the enzyme system involved in the fixation of atmospheric nitrogen. The fixation of atmospheric nitrogen relies on nitrogenase enzyme system, which comprise of nitrogenase and nitrogenase reductase. The electrons are transferred through ferredoxin or flavodoxin to nitrogenase reductase and then to nitrogenase where they are utilized to reduce N2 and H+ to NH3 [...]