Biology Assignment Help - Different type of bacteria

The bacterial structure is very simple in functionality; they are very complex in behavior. Compared to many other organisms, bacteria as a group may show the most extensive metabolic diversity. Some types of the bacteria are autotrophic, i.e., they synthesise their own food from inorganic or non living substrates. Their type may be photosynthetic autotrophic or chemosynthetic autotrophic. Biology Assignment Help could explain that the large majority of bacteria are heterotrophs, i.e., they do not synthesis their own food but depend on other non living or on dead organic matter for food.

These bacteria are very special since they live in some of the most harsh habitats or environment such as extreme salty areas, hot springs and marshy areas. Archaebacteria also differ from other bacteria in having a different cell wall structure and this distinct feature is responsible for their survival in extreme conditions. Methanogens are easily found in the guts of several ruminant animals such as cows and also buffaloes and they are responsible for the production of methane from the dung of these animals.

There are thousands type of different eubacteria or true bacteria. They are characterised by the presence of a rigid or strong cell wall, and if motile, a flagellum. The cyanobacteria referred to as blue-green algae have chlorophyll a similar to green plants and are Photosynthetic autotrophs . The cyanobacteria are unicellular, colonial or filamentous, and marine or terrestrial algae. Biology assignment help says that the colonies are generally surrounded by strong sheath. They often produce blooms in polluted water bodies. Some of these organisms can fix nitrogen in more specialised cells called heterocysts, Nostoc and Anabaena.

Chemosynthetic autotrophic bacteria oxidize various inorganic substances such as nitrates, nitrites and ammonia nitrate and use the released energy for their ATP production. They play a important role in recycling nutrients like nitrogen, phosphorous, iron and sulphur.

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