Size: Most bacteria fall within a range from 0.2 to 2.0 um in diameter and from 2 to 8 um in length a cyanobacterium 8 X 50 um ASENA EwGs 15x4m A rod-shaped prokaryote Microorganisms in EscTexhU ao Is typically about 1-5 general are very small micrometers (um) long and are completely and about 1 um wide moug invisible to the naked eye C25x.2umSize: Most bacteria fall within a range from 0.2 to 2.0 um in diameter and from 2 to 8 um in length A rod-shaped prokaryote is typically about 1-5 micrometers (μm) long and about 1 μm wide Microorganisms in general are very small and are completely invisible to the naked eye. A cyanobacterium 8 x 50 um