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MCB61_Scales

MCB61_Scales - Scales of Space and Time in Molecular and...

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Scales of Space and Time in Molecular and Cell Biology • pico  =  10 -12   (trillionths) • nano  =  10 -9   (billionths) • micro  =  10 -6    (millionths) • milli  =  10 -3    (thousandths) • centi  =  10 -2    (hundredths) • nm  =  nanometer  =  10 -9  meter  =  one billionth of a meter • Ångström  =  10 -10  meter  =  0.1 nanometer • ns  =  nanosecond  =  10 -9  second  =  one billionth of a second • the dimensions of molecules and cells • small molecules  ~  5 Å  =  0.5 nm • diameter of lipid-bilayer membrane  ~  50 Å  =  5 nm • diameter of typical medium size protein  ~  50 Å  =  5 nm • neuronal synapse gap  ~  40 nm  =  0.04 micrometer • bacterial cell  ~  0.1 micrometer (100 nm) to 10 micrometers (0.01 millimeter) • diameter of neuronal axon  ~  0.2 to 20 micrometers • nerve cell body  ~  5 to 100 micrometers
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MCB61_Scales - Scales of Space and Time in Molecular and...

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