Question
What are the characteristics of prokaryotic cells?
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Answer
Characteristics of prokaryotic cells:
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In prokaryotic cells, the nuclear membrane is absent. The genetic material is not enclosed by an envelope. The naked DNA lies coiled in the cytoplasm and is called a nucleoid or genophore.
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The cell wall is present in bacteria and cyanobacteria and is absent in mycoplasma.
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Cell lumen is filled with a fluid called the cytoplasm.
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Prokaryotic cells lack membrane-bound cell organelles such as mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, microtubules, microfilaments and centrioles.
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There are no true, fluid-filled vacuoles. Some prokaryotic cells contain gas vacuoles.
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Ribosomes are the only cytoplasmic organelles found in prokaryotic cells. They are small (70S) ribosomes.
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