The presence of nucleus would tell him that the cell is eukaryotic.
Eukaryotic cells are all those cells in whose cytoplasms a well-defined cell nucleus can be found, which contains most of its genetic material (DNA).
In this they differ from prokaryotic cells, which are much more primitive and whose genetic material is dispersed in the cytoplasm.
Eukaryotic cell is characterized by having within it the hereditary genetic material (DNA) of the organism and by having a complex structure composed of organelles that fulfill different essential functions in the cell.
Cell nucleus being the cell structure that contains the genetic material of the living being (DNA), and it is where the various functions of the cell are controlled and regulated and is covered by a nuclear envelope.
Therefore, we can conclude that the eukaryotic cell is one that has a defined nucleus, the cell nucleus is the cellular structure that distinguishes it from prokaryotic cells, where cellular activities are governed.
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