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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Facts

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  • 13 May 2011

    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

    Enzymes are proteins produced by the cells of all living organisms...

    Bacteria as miners

    The ability of chemoautotrophic bacteria to take energy from...

  • Bacteria as Sherlock Holmes

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

    Down-pouring bacteria

    It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...

  • 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

    Enzymes are proteins produced by the cells of all living organisms...