In this article we will discuss about the mechanism of bacterial photosynthesis. The absorption of light is by a pigment molecule which after absorption delivers the energy to electron carriers that can transduce the energy into chemical form. The function of chlorophyll molecule is absorption of photons. The energy contained in the excited pigments is channelled through light-harvesting pigments (also [...]
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 [...]