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 [...]
The two methods for the analysis of drinking water for coliforms are as follows:- 1. MPN (Most probable number) test. 2. Membrane filtration test. Method # 1 For MPN Three Tests are Done: These are presumptive test, confirmed test and completed test. For presumptive test the lactose broth is inoculated and incubated for 24 to 48 hours. Production of gas [...]
Everything you need to know about water and wastewater microbiology. Some of the frequently asked exam questions are as follows:- Q.1. Give the steps of typical sewage treatment plant are as given below Ans: The steps adopted in a typical sewage treatment plant are as given below: (i) Primary treatment which comprises two parts: (a) Screening, skimming and grinding of [...]