Refer to the given structure of a prokaryotic cell and select the c...

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Refer to the given structure of a prokaryotic cell and select the correct statement regarding it.
\( \mathrm{P} \)
W
(a) \( P \) is a layer of non-cellulosic polysaccharides.
(b) \( \mathrm{Q} \) is double layered in Gram +ve bacteria whereas it is single layered in Gram -ve bacteria.
(c) \( R \) is an impermeable covering that restricts entry and exit of molecules into and out of the cell.
(d) \( \mathrm{S} \) could be tubular outgrowths that are involved in locomotion only.
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