In this article we will discuss about Non-Pathogenic Microorganisms:- 1. Groups of Non-Pathogenic Microorganisms 2. Activities of Non-Pathogenic Microorganisms. Groups of Non-Pathogenic Microorganisms: Microorganisms may be divided into two groups — according to their activities: (a) The useful, and (b) The harmful. The first group the harmless, non-pathogenic microorganisms to man live mostly in the environment. They are called as [...]
The following points highlight the five main steps for culture of microorganisms. The steps are: 1. Preparation of Media 2. Adjustment of pH of Media 3. Preparation of Stabs and Slants 4. Pouring of Plates 5. Inoculation of Bacteria in Nutrient Slants and Agar Plates. Step # 1. Preparation of Media: Principle: In preparing a culture medium for any microorganism, [...]
The following points highlight the top three staining methods used for colouring the biological materials. The types are: 1. Negative Staining 2. Simple Staining 3. Differential Staining. Method # 1. Negative Staining: For quicker observation of the morphology of bacterial or yeast cells, the negative staining technique is applied. Requirements: 1. Bacterial/yeast suspension. 2. Slide, inoculating needle, pipettes etc. 3. [...]