In this article we will discuss about the electron transport system in bacterial photosynthesis. In the phototrophic bacteria, cytochrome a and other type of cytochrome oxidase are not present because photosynthesis takes place under anaerobic conditions and there is no need of interaction with molecular O2. The electron transport system i.e. the mechanism of reduction of NADP to NADPH + [...]
The following points highlight the top six methods that are used for preservation of organisms. The methods are: 1. Agar Slant Culture 2. Agar Slant Culture Covered with Oil 3. Saline Suspension 4. Preservation at Very Low Temperature 5. Preservation by Drying in Vacuum 6. Lyophilization or Freeze Drying. Method # 1. Agar Slant Culture: Agar slants are prepared in [...]
There are two important processes that play a significant role in parasitism, infections and intoxications. 1. Infection: Infection refers to entry of a pathogen into host tissues after transmission, and its growth and reproduction resulting in disease. The events of infection are as below: (i) Attachment and Colonization by the Pathogen: The host contains its own normal microbial flora. A [...]