Biomolecules and Chemistry in Everyday Life 1 Question 2
2. Which of the following statement is not true about RNA?
(2019 Main, 12 April I)
(a) It controls the synthesis of protein
(b) It has always double stranded $\alpha$-helix structure
(c) It usually does not replicate
(d) It is present in the nucleus of the cell
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Solution:
- RNA does not have double stranded $\alpha$-helix structure. Helixes present in RNA are single-stranded but sometimes they fold back on themselves to form a double helix structure. RNA usually does not replicate.
It is present in the nucleus of the cell. It controls the synthesis of protein. RNA molecules are of three types, i.e. messenger’s RNA ( $m$-RNA), ribosomal RNA ( $r$ RNA), transfer RNA ( $t$-RNA).
