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Pili bacteria are those bacteria that have the small hair-like appendages on the surface of bacteria. Characteristics of pili: The pili have the following characteristics: Pili are composed of pilin protein that is synthesized by the bacteria. Pili are responsible for the ...

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Filamentous Bacteria

Filamentous bacteria are those bacteria that produce long mesh-like filament by growing end to end. These bacteria are seen as long strands under the microscope. These bacteria are present in sludge areas for better settling. They are also present in water ...

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Operon Model

Operon model was proposed by Francois Jacob and Jacques Monod. The operons are the genes that are coded for related protein. Operon consists of a regulator, promoter and the structural genes. Eukaryotic DNA has one operon for one gene that encodes ...

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Heterotrophic Bacteria

Heterotrophic bacteria are those bacteria that cannot prepare their own food and obtain food from the environment. These bacteria cannot convert light energy into chemical energy and need ingredients for their metabolism. These bacteria need organic carbon and can use ...

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Photosynthetic Bacteria

Photosynthetic bacteria are those bacteria that can prepare their own food by fixing the CO2 present in the environment. These bacteria can convert light energy into chemical energy and use it for their metabolism. CO2 + H2O ➝ C6H12O6 + O2 Examples: Cyanobacteria Why ...

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Archaea V/S bacteria

First, Archaea bacteria were classified in the eubacteria kingdom. Later in 1970, scientists separate the bacteria into two kingdoms as Archaea-bacteria and eubacteria. Below are some of the differences that are present among archaea and Bacteria. We have made two ...

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Nitrifying bacteria convert?

Nitrifying bacteria convert? Nitrifying bacteria are those bacteria that can convert nitrite into nitrate. These bacteria do this process into 2 steps: Ammonification Nitrification Nitrifying bacteria are chemoautotrophs that are commonly are Nitrobacter and Nitrospira. These bacteria contain nitrite oxidase enzyme that can ...

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Acid fast Bacteria

Acid-fast bacteria are those bacteria that have mycolic acid in their cell wall. These bacteria stain acid-fast positive. This bacterium was first discovered by Ziehl–Neelsen that's why the staining is also named by the scientist i.e Ziehl–Neelsen staining. Examples: Mycobacterium tuberculosis.  So in ...

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Aerobic Bacteria

“Aerobic bacteria are those that can survive or grow in the presence of oxygen” Examples: Bacillus, Nocardia, Pseudomonas. Classification of aerobic bacteria: There are three types of aerobic bacteria. Obligate aerobes: These bacteria are strictly survived in the presence of oxygen. These bacteria can’t live in ...

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