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Earn 100

Select the pair of correct statements with respect to the prokaryotic cell. 

(i) The genomic DNA is circular and naked.
(ii) Large linear DNA outside the genomic DNA is known as a plasmid.
(iii) Plasmid DNA confers certain unique, phenotypiç characteristics to bacteria.
(iv) Prokaryotic cells are devoid of cell organelles.

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Important Questions on Cell : The Unit of Life

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Read the following statements and check out the option with incorrect statements with respect to prokaryotes.

(i) Prokaryotic cell's envelope consists of a tightly, bounded three layered structures with outermost arrangement as cell membrane, glycocalyx and cell wall.
(ii) Mesosomes and chromatophores are the cell membranes extensions.
(iii) Fimbriae are small bristle like fibres helpful in attachment with a substratum.
(iv) Thin filamentous extension from the cell wall of bacteria are called flagella.

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The intercellular structure separating the walls of two adjacent cells is
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The phragmoplasts are precursors of
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According to Singer and Nicolson which of the following are present in plasma membrane?
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Plasma membrane is asymmetric because