Study the given figure of structure of $TMV$ (Tobacco Mosaic Virus) and select the option that correctly identifies the labellings $A$ and $B$.
Updated On: Jul 7, 2022
a
b
c
d
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The Correct Option isC
Solution and Explanation
$TMV$ (Tobacco mosaic virus) is a ribovirus. It is rod shaped measuring $300\times 20nm$. It is made up of $ssRNA$ and proteinaceous covering capsid with $2130$ capsomeres, which are helically arranged to form a hollow cylinder.
Viruses are not the only submicroscopic bodies capable of causing disorders within cells.
Sub-viral particles are infectious agents that bear a resemblance to viruses in structure and composition. But they are notably smaller and simpler than viruses but lack either nucleic acid or protein and are thus not viruses. (Thus they may be proteins beyond nucleic acids or only nucleic acids beyond protein coat /capsid.)
