Which is not true of eukaryotic cells?
a. a true nucleus contains the chromosomes.
b. eukaryotic cells contain membrane-bounded compartments.
c. they contain ribosomes that are smaller than those of prokaryotic cells.
d. they all contain mitochondria.
e. they contain many organelles in the cytoplasm

Option (c).

Explanation:

Eukaryotes may be defined as the organism that contains the well defined nucleus and membrane bound cell organelle. The eukaryotes contains morte cell organelles as compared with prokaryotes.

The ribosomes of eukaryotes are larger than the ribosomes of prokaryotes. The 80'S ribosomes are present in eukaryotes whereas 70'S ribosomes are present in prokaryotes.

Thus, the correct answer is option (c).

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