In this article we will discuss about the subject-matter and structure of Bacteria Cell. Meaning of the Bacteria Cell: The bacteria are unicellular, achlorophyllous prokaryotic micro-organisms leading either saprophytic or parasitic mode of life. An average bacterial cell may measure 1.25 μ in diameter. The smallest among the known bacteria is dialister pneumosintes (0.15 to 0.3 μ in length) and [...]
In this article we will discuss about Viruses:- 1. Meaning of Viruses 2. Sizes and Shapes of Viruses 3. Structure. Meaning of Viruses: Virus is a Latin word which means poison. Adolf Mayer described for the first time a disease of tobacco plant. Dimitri Ivanowski, a Russian botanist in 1892 demonstrated experimentally that sap of mosaic tobacco plant was capable [...]
In this article we will discuss about Mitochondria in Plants and Animals. After reading this essay you will learn about:- 1. Subject-Matter of Mitochondria 2. Morphology of Mitochondria 3. Structural Variations 4. Chemical Composition 5. Development 6. Origin. Contents: Essay on the Subject-Matter of Mitochondria Essay on the Morphology of Mitochondria Essay on the Structural Variations in Mitochondria Essay on [...]