Below is a table showing cell sizes and their approximate diameter:
Cell Sizes
Cell
Approximate Diameter
Escherichia coli (bacterium)
0.5 to 0.8 pm
Human erythrocyte
6 to 8 pm
Human ovum (egg cell)
100 pm
Saccharomyces cerevisiae (yeast)
5 to 10 pm
Streptococcus pneumonia (bacterium)
0.5 to 1.3 pm