Tag Archives | Bacteria

Structure of Some Bacterial Pigments (With Diagram)

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 [...]

By |2016-08-30T16:58:10+00:00August 30, 2016|Bacteria|Comments Off on Structure of Some Bacterial Pigments (With Diagram)
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Bacterial Cells: Size, Shape and Arrangement (With Diagram)

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 [...]

By |2016-08-30T16:58:09+00:00August 30, 2016|Bacterial Cells|Comments Off on Bacterial Cells: Size, Shape and Arrangement (With Diagram)
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Archaeabacteria: Characteristics, Types and Phylogeny

In this article we will discuss about:- 1. Taxonomy of Archaebacteria 2. General Characteristics of Archaebacteria 3. Representative Types 4. Phylogeny. Taxonomy of Archaebacteria: The domain Archaea has been divided into two Phyla: 1. Crenarchaeota and 2. Euryarchaeota. The first includes the extreme thermophiles, acidophiles and sulfur-metabolizing archaebacteria. They are mostly anaerobic and they occur generally in geo-thermally—heated environment, like [...]

By |2016-08-30T16:58:08+00:00August 30, 2016|Bacteria|Comments Off on Archaeabacteria: Characteristics, Types and Phylogeny
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