Which term describes single-celled organisms that lack a nucleus?

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Study for the NCHSE End-of-Pathway Assessment. Prepare with multiple choice questions, hints, and detailed explanations. Get ready for success on your exam!

Multiple Choice

Which term describes single-celled organisms that lack a nucleus?

Explanation:
Single-celled organisms that lack a nucleus are prokaryotes. Bacteria are classic prokaryotes; their DNA sits in a nucleoid region without a defined nucleus, and they reproduce by binary fission. The other options don’t fit: viruses aren’t cells at all, fungi are mostly eukaryotic (and can be multicellular, though some are unicellular like yeasts), and protozoa are single-celled but have a true nucleus. So bacteria best match the description.

Single-celled organisms that lack a nucleus are prokaryotes. Bacteria are classic prokaryotes; their DNA sits in a nucleoid region without a defined nucleus, and they reproduce by binary fission. The other options don’t fit: viruses aren’t cells at all, fungi are mostly eukaryotic (and can be multicellular, though some are unicellular like yeasts), and protozoa are single-celled but have a true nucleus. So bacteria best match the description.

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