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Which one of the following cell organelles may play a role in expelling excess water and wastes in the case of unicellular organisms?
(a)Lysosome
(b)Vacuole
(c)Golgi body
(d)Endoplasmic reticulum

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Important Questions on Cell : The Unit of Life
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In prokaryotic organisms, nuclear region is not surrounded by a membrane. This undefined nuclear region is known as:

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Net movement of water from a dilute to a concentrated solution through a selectively permeable membrane is called

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Mitochondria are able to produce their own

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Which one of the following cell organelles does not possess nucleic acid?

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Which one of the following cell organelles does not possess its own genetic material encoding proteins?

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Which one of the following organelles of mammalian cell is rich in hydrolytic enzymes?
