The primary distinguishing feature between prokaryotic cells and eukaryotic cells is the presence of membrane-bound organelles. Here's a summary of the key differences based on the options provided:
-
Ability to reproduce: Both prokaryotic and eukaryotic cells can reproduce. This is not a distinguishing feature.
-
Presence of DNA: Both types of cells contain DNA. Prokaryotic cells generally have a single circular DNA molecule, while eukaryotic cells have multiple linear DNA molecules housed in the nucleus. However, presence of DNA alone is not a distinguishing factor.
-
Presence of ribosomes: Both prokaryotic and eukaryotic cells contain ribosomes, although they differ in size and structure. This is also not a distinguishing feature.
-
Presence of membrane-bound organelles: This is the key distinguishing feature. Prokaryotic cells lack membrane-bound organelles (e.g., a nucleus, mitochondria, endoplasmic reticulum), while eukaryotic cells have these organelles.
In summary, the most significant distinction is the presence of membrane-bound organelles in eukaryotic cells.
1 answer