Figure 6.2 The size range of cells. Most cells are between 1 and 100 ?m in diameter (yellow region of chart) and their components are even smaller, as are viruses. Notice that the scale along the left side is logarithmic, to accommodate the range of sizes shown. Starting at the top of the scale with 10 m and going down, each reference measurement marks a tenfold decrease in diameter or length. 10 m 1 m - Human height Length of some nerve and muscle cells 0.1 m - Chicken egg 1 cm 1 mm - Frog egg 100 ?m - Human egg Most plant and animal cells 10 ?m - Nucleus Most bacteria 1 ?m - Mitochondrion 100 nm - Smallest bacteria Viruses 10 nm - Ribosomes Proteins Lipids 1 nm - Small molecules 0.1 nm - Atoms Unaided eye Light microscopy Super-resolution microscopy Electron microscopy 1 centimetre (cm) = 10^-2 metre (m) 1 millimetre (mm) = 10^-3 m 1 micrometre (?m) = 10^-3 mm = 10^-6 m 1 nanometre (nm) = 10^-3 ?m = 10^-9 m
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2, it's impossible to provide a specific answer. However, generally, to see the smallest bacteria, you would need a microscope with high magnification and resolution, such as an electron microscope. Show more…
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