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    2.

    Which of the following statements accurately differentiates Archaebacteria from Eubacteria?

    A

    Archaebacteria have peptidoglycan in their cell walls, while Eubacteria do not.

    B

    Archaebacteria lack introns in their genes, while Eubacteria have introns.

    C

    Archaebacteria have branched chain lipids in their cell membranes, while Eubacteria have straight chain lipids.

    D

    Archaebacteria are sensitive to antibiotics, while Eubacteria are resistant.

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    5.

    Cyanobacteriun is an

    A

    Alga having blue-green pigment

    B

    Alga having red pigment

    C

    Alga having brown pigment

    D

    Alga having yellow-brown pigment

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    8.

    Prokaryotic organisms capable of nitrogen fixation in specialized cells called heterocyst

    A

    Have chlorophyll a similar to green plants

    B

    Are generally not surrounded by gelatinous sheath in colonial forms

    C

    Lack photolysis of water and PSI

    D

    May have chemosynthetic nutrition also

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