Which type of cells are known for having a nucleus and organelles?

The correct answer is eukaryotes because these cells are characterized by having a distinct nucleus that houses their genetic material, as well as membrane-bound organelles that perform various essential functions within the cell. This organization allows eukaryotic cells to carry out complex processes, such as cellular respiration, photosynthesis, and protein synthesis, all within specialized structures.

In contrast, prokaryotic cells, such as bacteria, lack a nucleus and membrane-bound organelles; their DNA is typically located in a nucleoid region. Viruses are not considered cells at all, as they are acellular and consist of genetic material encased in a protein coat, requiring a host cell for replication. Prions are infectious agents composed solely of misfolded proteins and do not have any cellular structure, including a nucleus or organelles. Therefore, eukaryotes stand out as the type of cells that possess both a nucleus and organelles, supporting more complex cellular functions than other options listed.