
Which of the following option is not correct with respect to soluble RNA?
It has structural and catalytic roles in protein synthesis.
It constitutes 15% of total cellular RNA.
It possesses three unpaired nucleotides CCA at 3' end.


Important Questions on Molecular Basis of Inheritance
How many amino acids will be produced by the given mRNA sequence if the 16th base is substituted by uracil?
5' A U G C G C A A A C C C U A G C G A 3'

In mRNAs, untranslated regions (UTRs) are required for

To code the 50 amino acids in a polypeptide chain, what will be the minimum number of nucleotides in its cistron?

The tRNA is associated with all the features except

Which of the following antibiotic inhibits peptidyl transferase activity?

What would happen if a gene encoding a polypeptide of 50 amino acids undergoes nonsense mutation at the 25th codon, i.e., UAC into UAA?

Identify the incorrectly matched pair.

How many of the following statements are correct with respect to genetic code?
(i) The codon is read in mRNA in a contiguous fashion.
(ii) One codon does not overlap the next codon.
(iii) The code is nearly universal.
(iv) Ochre, amber and opal are terminator codons.
(v) Only tryptophan and methionine are specified by a single codon.
