What are bacteria?

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Multiple Choice

What are bacteria?

Explanation:
Bacteria are single-celled microorganisms that lack a true nucleus (prokaryotes). This makes them fundamentally different from multicellular organisms, viruses, and prions. The key point is that bacteria are one-celled entities, whereas multicellular organisms are made of many cells, viruses are not cells at all and require a host to replicate, and prions are simply misfolded proteins. Some bacteria can perform photosynthesis or rely on organic material, but their defining trait for this question is being one-celled microorganisms.

Bacteria are single-celled microorganisms that lack a true nucleus (prokaryotes). This makes them fundamentally different from multicellular organisms, viruses, and prions. The key point is that bacteria are one-celled entities, whereas multicellular organisms are made of many cells, viruses are not cells at all and require a host to replicate, and prions are simply misfolded proteins. Some bacteria can perform photosynthesis or rely on organic material, but their defining trait for this question is being one-celled microorganisms.

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