MEDIUM
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IMPORTANT
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Cellulose, galactans, mannans and calcium carbonate are found in the cell wall of

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Important Questions on Cell: The Unit of Life

MEDIUM
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IMPORTANT

Read the following statements w.r.t. cell wall and select the correct option:
(a) A non-living rigid structure which forms an outer covering for the plasma membrane.
(b) It gives shape to the cell and protects the cell from mechanical damage and infection.
(c) It helps in cell-to-cell interaction.
(d) It provides a barrier to undesirable macromolecules.

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Which of the following cell organelles has enzymes which are optionally active at acidic pH?
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A student studies cell structure under a compound microscope and concludes that the cell is an animal cell. Of the following, which observation might have helped him to conclude it?
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If the cell wall of a plant cell is removed, which of the following ability will be lost by the cell?