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Diversity of Living Things

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Diversity of Living Things
BACTERIA.
CLASSIFICATION

Bacteria are extremely small and some can be just seen with the naked human eye. They are much smaller than eukaryotic cells but are still very complex despite their size. .the cell is surrounded by a cell membrane that enclosees the bacteria cell. They are single celled organisms. Bacteria are prokaryotic cells and therefore do not have a nucleus and do not have a lot of organelles like: mitochondria, chloroplasts, and other organelles that are usually found in eukaryotic cells.. They reproduce asexually and mutations occur very rapidly. The main shapes of bacteria are cocci: oval shaped, bacilli- rod shaped and spirilli- spiral shaped. Bacteria can use almost any source as their energy source. This is why they are found everywhere and can survive in so many different environments. Bacteria are very useful but some can be dangerous. Bacteria do jobs that no other kingdom can do and they are often the most important jobs that benefit us the most. Which range from recycling dead organisms to helping cows digest cellulose. Some dangerous forms of bacteria can cause deadly diseases like salmonella, a food poisoning that is very deadly. There are some major phlyuhs
Chlorobia-and cyanobacteria are shaped like rods, spirals and are anaerobic. They do contain chloryphyll and can produce their own food through photosynthesis. Not all have to use sunlight to induce that process. Cyanobacteria give out oxygen.
Proteobacteria- These live on the roots of some platns and transfer nitrogen from the air to the soil. This phylum contain bavteria like salmonella and E. Coli which are very dangerous, but most others are harmless.
Firmicutes- contains a wide variety of bacteria that has really thick cell walls. This contains the bacteria Bacillus anthracis causing anthrax.
Acquificae- are bacteria that live in more extreme environments. They are autotrophs They make their food by breaking down chemicals through the process chemosynthesis.

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