Question

Is Thiobacillus and Clostridium are prokaryoticorganisms whereas Euglena and Paramecium are unicellular eukaryotic organisms?

Answer 1

Bacteria like Thiobacillus and Clostridium are prokaryotic whereas Euglena and Paramecium are eurkaryotic because the latter possess in their cellular structure, membrane bound organelles such as nucleus and vacuoles. Presence of membrane bound organelles is the primary basis of classification of an organism as prokaryotic or eukaryotic.