A compound microscope consists of three main parts: 1. Objective Lens 2. Eye Piece 3. Condensers. Part # 1. Objective Lens: The chief characteristics of the objective lens are: (a) To gather the light rays coming any point to the object, (b) To unite the light in a point of image, (c) To magnify the image. There are three types [...]
The following points highlight the three main types of chromatography. The types are: 1. Adsorption Column Chromatography 2. Thin Layer Chromatography 3. Gas Chromatography. Type # 1. Adsorption Column Chromatography: The general chromatography method was introduced into biology by Tswett in 1906 and various adsorbents such as starch and aluminium oxide are poured as a slurry into a long glass [...]
The below mentioned article provides a study note on bacterial motility. Some bacteria are self-motile. They are able to swim through the liquid in which they live. They cannot crawl over dry surfaces or fly through the air. Motility is universal among the spirilla, common among the bacilli but lacking or rare in coccal forms. The organs of locomotion are [...]