In this article we will discuss about the meaning and functions of capsule. Meaning of Capsule: Some of the bacterial cells are surrounded by the extracellular polymeric substances (EPS) which are commonly called capsule or glycocalyx. It forms an envelope around the cell wall and can be observed under light microscope after special staining technique […]
Capsule: Meaning and Functions | Bacteria
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Chemo-Taxis: Meaning and Demonstration | Bacteria
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In this article we will discuss about:- 1. Meaning of Chemo-taxis 2. Demonstration of Chemo-taxis 3. Chemotactic Behaviour of Bacteria. Meaning of Chemo-Taxis: Chemo-taxis is the movement of bacteria towards chemical attraction and away from chemical repellants. Bacteria are attracted towards the nutrients such as sugars and amino acids, and are repelled by harmful substances […]
Cell Structure of Cyanobacteria | Microbiology
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Like bacteria, the cell of cyanobacteria also consists of a mucilaginous layer called sheath, the cell wall, plasma membrane and cytoplasm. These are shown in Fig. 4.32 and described below: 1. Sheath: Usually the cell of cyanobacteria are covered by a hygroscopic mucilaginous sheath which provides protection to cell from unfavourable conditions and keeps the […]
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