• Microbiology

    Morphology of Bacteria

    Size The unit of measurement used in bacteriology is the micron (micrometre) 1 micron (μ) or micrometre (μm) – one-thousandth of a millimetre 1 millimicron (mμ) or nanometer (nm) – one-thousandth of a micron or one-millionth of a millimetre 1 Angstrom unit (Å) – one-tenth of a nanometer The limit of resolution with the unaided eye is about 200 microns. Bacteria aresmaller which can be visualized only under magnification. Bacteria come in a great many sizes and several shapes. Most bacteria range from 0.2 to 2.0 μm in diameter and from 2 to 8 μm in length. (anoverall average size of 1 to 10 μm.) Shape Depending on their shape,…

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