Which of the following best describes eukaryotic cells compared to prokaryotic cells?

Eukaryotic cells are characterized by the presence of membrane-bound organelles, which differentiate them from prokaryotic cells. These organelles, such as the nucleus, mitochondria, and endoplasmic reticulum, are enclosed within membranes that compartmentalize cellular functions, allowing for a more complex organization and specialization of tasks within the cell. This structural complexity supports various processes, such as energy production, protein synthesis, and genetic material management, which are essential for the cell's operation.

In contrast, prokaryotic cells lack these membrane-bound organelles and do not have a nucleus; instead, their genetic material is found in a nucleoid region and they typically have simpler structures. Additionally, eukaryotic cells tend to be larger than prokaryotic cells, not smaller, and they are capable of reproduction, both sexually and asexually. Thus, the presence of membrane-bound organelles is a key defining feature of eukaryotic cells.