Undefined nuclear region of a prokaryotic cell containing only nucleic acids is called as a _______
A
Nucleoid
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B
Gas vacuoles
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C
Nucleosome
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D
Chromatin fibre
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Solution
The correct option is A Nucleoid The nucleoid (meaning nucleus-like) is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material. In contrast to the nucleus of a eukaryotic cell, it is not surrounded by a nuclear membrane. In organisms like bacteria the nuclear region of cell may be poorly defined due to absence of a nuclear membrane.