SAT Subject Biology Practice Question 101: Answer and Explanation

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Question: 101

11. A unicellular prokaryote belongs to which kingdom?

A. Animalia
B. Eubacteria
C. Fungi
D. Plantae
E. Protista

Correct Answer: B


Fungi, plants, and animals are all multicellular and possess nuclei within their cells, so this cannot be the answer. Many protists are unicellular, but they are still eukaryotic. Only Archaea and Eubacteria contain unicellular prokaryotic organisms.

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