Prokaryotic cells contain an undefined nuclear region known as .

nuclear membrane

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nucleus

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nucleoid

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Solution

The correct option is C nucleoid

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Question 13
The undefined nuclear region of prokaryotes is also known as

(a) nucleus
(b) nucleolus
(c) nucleic acid
(d) nucleoid

Fill in the gaps in the following table illustrating differences between prokaryotic and eukaryotic cells.

	Prokaryotic cell		Eukaryotic cell
1.	Size: generally small ( 1-10 µm) 1 µm== 10^-6 m	1.	Size: generally large (5-100 µm)
2.	Nuclear region: _____________________________ and is known as ________.	2.	Nuclear region: well-defined and surrounded by a nuclear membrane
3.	Chromosome: single	3.	More than one chromosome
4.	Membrane-bound cell organelles are absent	4.	________________________________________________________________________________________________

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