A prokaryote is a simple, mostly single-celled organism that lacks which structure?
AA ribosome
BCytoplasm
CA membrane
DA nucleus
Answer & Solution
Correct answer: D. A nucleus
1. All cells share a plasma membrane, cytoplasm, DNA, and ribosomes.
2. What a prokaryote lacks is a nucleus, or any other membrane-bound organelle.
3. Its DNA still exists; it simply sits in a central region called the nucleoid instead of inside a nucleus.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.2 Prokaryotic Cells_
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