Question

Which one of the following organisms is not an example of eukaryotic cells?

• A. Amoeba proteus
• B. Paramecium caudatum
• C. Escherichia coli
• D. Euglena viridis

Answer 1

The correct option is C Escherichia coli

Amoeba proteus, Paramecium caudatum, Euglena viridis are unicellular eukaryotic organisms and belongs to the kingdom Protista. Escherichia coli is a prokaryotic organism and belongs to the kingdom of Monera. It does not have nucleus or other membrane-bound cell organelles like chloroplast and mitochondria. Also, ribosomes of prokaryotes like Escherichia (70S type) are different from ribosomes of eukaryotes (80S type).
So, the correct answer is option C.