In this article we will discuss about:- 1. Meaning of Bacteria 2. Reproduction of Bacteria 3. Importance. Meaning of Bacteria: Bacteria are the smallest living things which are visible only under very high magnification of a microscope. Many of them are positively harmful to plants and animals, as they live parasitically on the host, and cause diseases. Some bacteria, on [...]
Besides the photosynthetic bacteria, many other bacteria produce characteristic pigments. Biosynthesis of such non-photosynthetic pigments is genetically controlled and, therefore, pigmentation can be used as reliable taxonomic characters in identification. Some pigments are insoluble in aqueous media and they remain restricted to the cells, while others are soluble and they diffuse from the cells into the surrounding medium. Sometimes the [...]
In this article we will discuss about:-1. Size of Bacterial Cell 2. Shape of Bacterial Cell 3. Arrangement. Size of Bacterial Cells: Individual bacterial cells are not visible to the unaided eye. In general, bacterial cells do not exceed 1 μm (micrometer or micron) in diameter, though their length may vary widely. Some bacteria discovered in recent years, are much [...]