Question

The difference(s) between mRNA and tRNA is/are that:
(i) mRNA has more elaborate 3 - dimensional structure due to extensive base - pairing
(ii) tRNA has more elaborate 3 - dimensional structure due to extensive pairing
(iii) tRNA is usually smaller than mRNA
(iv) mRNA bears anticodon but tRNA has codons

• A. (i) and (iii)
• B. All of these
• C. (ii) and (iii)
• D. (i), (ii) and (iii)

Answer 1

Answer: (A)

(i) and (iii)

The major differences between mRNA and tRNA out of the given options are that an mRNA has a more elaborate three-dimensional structure due to extensive base-pairing and that the mRNA bears codons but tRNA has anticodons. Also, tRNA is usually smaller than the mRNA.

So, the correct answer is '(i) and (iii)'.