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Ameera AbuMfreeh

The Prokaryotic Kingdoms

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The Prokaryotic

question

Archaebacteria

hypothesis

Eubacteria

Thermoacido-philes

Thermoacidophiles Thermoacidophiles, or thermophiles, inhabit hot environments. A report on bacteria from the University of Miami Department of Biology states that thermoacidophiles thrive in extremely acidic, hot and moist regions, such as those in and near sulfur hot springs.

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temperatures

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If they are in temperatures below 131 degrees F (55 degrees C) and PH 1-2, they die.

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Temperatures

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discussion

pictures

The distinction between archaebacteria and eubacteria that justified their separation into two Kingdoms includes differences in cell wall and cell membrane compositions and in the sequence of their DNA.

Classification basis

Also, the membrane lipids of archaebacteria contain fatty acids with branched chains, while the membrane lipids of eubacteria contain straight – chain fatty acids

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cell membrane

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Cell wall of archaebacteria contains no muramic acid, which is present in cell walls of eubacteria.

cell wall

Methanogens can be found in environments that are anaerobic (no oxygen). Types of environments methanogens are found in are swamps and marshes, or intestinal tracts of animals and some humans. As their name suggests, methanogens produce methane gas.

The methanogens

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informations

According to a study published in the October 2000 issue of The American Journal of Gastroenterology, their trait of producing methane makes them easily detected within the intestinal tract

discussion

pictures

The extreme halophile (salt loving). They love in highly concentrated salty water, which reaches concentrations of 20% like in the DeadSea.

halophile

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These bacteria also do photosynthesis but without using chlorophyll.

photosynthesis

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pictures

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