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Difference Between Prokaryotic and Eukaryotic Cell

cells lack a ...

Question

___ cells lack a nuclear membrane. (Prokaryotic/Eukaryotic)

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Solution

Prokaryotic cells are primitive cells which lack a nuclear membrane and in turn a well-defined nucleus. They lack cellular organelles found in eukaryotic cells.

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Q. Assertion :The cells that have membrane bound organelles are called eukaryotic. Reason: The cells that lack membrane bound organelles are called prokaryotic.

Q. Read the following statements and identify the correct option(s) given.
I. A prokaryotic cell lack nuclear membrane, chloroplasts, mitochondria, microtubules and different kinds of pili.
II. In a eukaryotic cell, the nuclear membrane, chloroplast, mitochondria and pili are present.
III. In a prokaryotic cell, the ribosome is of 70S type and in mitochondria of the eukaryotic animal cell, the ribosome is of the 80S type.

Q. Which is correct option amongst the following statements?
(a) Nuclear membrane, chloroplast, mitochondria, microtubules and pili are absent in prokaryotic cells.
(b) Nuclear membrane, chloroplast, mitochondria, microtubules and pili are present in eukaryotic cells
(c) Ribosomes are 70S in prokaryotic cells and mitochondria. They are 80 S in animal cells.

Differentiate between

(a) Cell wall and cell membrane.

(b) Prokaryotic and eukaryotic cells.

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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Difference Between Prokaryotic and Eukaryotic Cell

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