In prokaryotic organisms, nuclear region is not surrounded by a membra

In prokaryotic organisms, nuclear region is not surrounded by a membrane. This undefined nuclear region is known as

[amp_mcq option1=”Nucleic acid” option2=”Nucleoid” option3=”Nucleolus” option4=”Nucleosome” correct=”option2″]

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UPSC NDA-2 – 2020

In prokaryotic organisms (like bacteria and archaea), the genetic material (DNA) is located in a region of the cytoplasm that is not enclosed by a nuclear membrane. This ill-defined, irregularly shaped region where the genetic material is concentrated is called the nucleoid.

Prokaryotes lack membrane-bound organelles, including a true nucleus. Eukaryotic cells, on the other hand, have a membrane-bound nucleus containing their genetic material.

– Nucleic acid refers to the genetic material itself (DNA or RNA).
– Nucleolus is a dense structure found within the nucleus of eukaryotic cells, involved in ribosome synthesis.
– Nucleosome is a structural unit of a eukaryotic chromosome, consisting of a length of DNA coiled around a core of histone proteins.

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