Micro Organisms
The binomial name of a microbe is composed of

its family and class names
its kingdom and genus names
its genus and species names
its genus name and a species modifier

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Micro Organisms
Genetic and biochemical similarities between contemporary cyanobacteria and eukaryotic chloroplasts are accepted to mean that

eukaryotes evolved from bacteria
oxygenic photosynthesis first evolved in eukaryotes
cyanobacteria arose from chloroplasts which escaped from plant cells
eukaryotes evolved from archaea

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