Human eye and microscopy
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30 Terms
Unaided eye
Can see objects larger than about 100 μm
Light microscope
Used to view cells, nuclei, mitochondria, and most bacteria
Electron microscope
Used to view viruses, ribosomes, proteins, lipids, and small molecules
Structures visible with a light microscope
Plant cells, animal cells, nuclei, mitochondria, and most bacteria
Structures requiring an electron microscope
Viruses, ribosomes, proteins, lipids
what is visible with naked eye
human hieght, length of SOME nerve/muscle cells, chicken egg, frog eggs, paramecium,
What can be seen with light microscope
frog eggs, paramecium, plant/animal cells, nucleus, most bacteria, mitochondrion, smallest bacteria
what can be seen with electron microscope
plant/animal cells, nucleus, most bacteria, mitochondrion, smallest bacteria, protiens, lipids
1 meter (m)
39 inches
1 centimeter (cm)
10⁻² m
1 millimeter (mm)
10⁻³ m
1 micrometer (μm)
10⁻⁶ m
1 nanometer (nm)
10⁻⁹ m
Unaided eye Can see objects larger than about
100 μm
Human height
About 1-10 m
Chicken egg
About 1-10 cm
Frog eggs
About 1 mm
Plant and animal cells
About 10-100 μm
Nucleus
About 10 μm
Mitochondrion
About 1 μm
Most bacteria
About 1 μm
Smallest bacteria
About 100 nm
Viruses
About 100 nm
Ribosomes
About 10-20 nm
Proteins
About 1-10 nm
Lipids
About 1 nm
Small molecules
About 0.1-1 nm
Atoms
About 0.1 nm
largest object shown on the scale
Human height
Smallest object shown on the scale
Atoms