Which feature do prokaryotic and eukaryotic cells share?
a)
nucleolus
b)
cytoplasm
c)
nuclear membrane
d)
membrane-bound organelles

The correct option is B. 
Prokaryotic cells are primitive cells which have no true nucleus and membrane bound organelles while eukaryotic cells are cells that have true nucleus, membrane bound organelles and well defined structures and layouts. Although the two cells are quite different from each other, they share some similarities and one of this is cytoplasm. Cytoplasm is present in the interior compartments of both cells.

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