What is a difference between prokaryotic and eukaryotic cells? A.
Prokaryotic cells do not have a nucleus, but eukaryotic cells do.
B.
Prokaryotic cells always have cell walls, but eukaryotic cells do not.
C.
Organisms with eukaryotic cells are always multicellular, but organisms with prokaryotic cells are not.
D.
Eukaryotic cells do not have membrane-bound organelles, but prokaryotic cells do.

a

Explanation:

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions. Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.