Many shapes for bacteria

Bacteria are classed by shape, feeding method, metabolism and wall features. Different forms of cells can be observed under the microscope. Cocci (from the Greek berries) are round in shape; when clustered together, they are called staphylococci, while when gathered into chains they are called streptococci. Rod-like prokaryotes are called bacilli. Bacilli can usually be found as separate cells, but sometimes they can be found in pairs (diplobacilli) or chains (streptobacilli). Other bacteria are bent in shape or look like a squat spiral. The former are called vibriones, while the latter are called spirilla. Finally, bacteria that look like a long and flexible spiral are called spirochetes. Spirochetes include some “giant” bacteria that can be up to 0.5 mm long, i.e. 500 times bigger than an ordinary prokaryote cell.

 
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    The ability to destroy organic matter has been used by man...

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    A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…

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  • Bio-luminescence

    Many sea animals, including a lot of fish and molluscs that live in the dark in the ocean depths...

  • Decomposing organisms

    The ability to destroy organic matter has been used by man...

  • Bacteria as detergents

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