A microbiologist is in the process of classifying a newly discovered organism. Its characteristics include: eukaryotic unicellular has a cell wall autotrophic Which type of organism is it most likely to be?

A diatom is a unicellular eukaryote that has a cell wall and makes its own food through photosynthesis, so it is autotrophic. Amoebas and paramecia are generally heterotrophic, and slime molds do not fit the autotrophic description. Therefore, the organism is most likely a diatom.

AI-written and checked against the verified answer.