Question

score: 213/600
quest
the presence or absence of ______ differentiates prokaryotic cells from eukaryotic cells.
dna
a cell wall
a nucleus
cytoplasm

Explanation:

Prokaryotic cells lack a membrane-bound nucleus, while eukaryotic cells have one. DNA, cytoplasm are present in both; cell walls are not universal to either group (e.g., animal cells lack cell walls). Thus, the nucleus is the key differentiator.

Answer:

a nucleus