Chromosomes eukaryotic microorganisms

Microbial cell structure is varied with a tremendous diversity in size and shape. Prokaryotic cells typically contain a cell wall, 70s ribosomes, a chromosome that is not membrane bound, various inclusions and vacuoles, and extrachromosomal DNA or plasmids. Eukaryotic microorganisms are equally varied with a variety of forms many are photosynthetic or harbor photosynthetic symbionts. Many eukaryotic cells contain prokaryotic endosymbionts, some of which contain their own set of plasmids. Given the variety of eukaryotic microorganisms, they have been labeled protists, since they are often a mixing of algal and protozoan characteristics within apparently related groups. 

Many microorganisms are eukaryotic organisms, having their nuclear material organized within a nucleus bound by an envelope. Eukaryotes also have paired chromosomes of DNA, which can be seen microscopically during mitosis and meiosis. They also have a number of other discrete cellular organelles. 

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