Question

The differences between mRNA and tRNA are that
(i) mRNA has more elaborated 3-dimens~onaI structure due to extensive base-pairing
(ii) tRNA has more elaborated 3-dimensional Structure due to extensive base-pairing
(iii) tRNA is usually smaller than mRNA
(iv) mRNA bears anticodon but iRNA has codons.

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (i), (ii) and, (iii)
• D. (i), (ii), (iii) and (iv)

Answer 1

The correct option is B (ii) and (iii)

mRNA is the longest RNA with maximum molecular weight but it is east abundant. IRNA is the smallest and coiled like a clover leaf with elaborated 3-dimensional structure. mRNA consists of 75-6000 bases while tRNA has 73-93 bases.