| What is/are true about tRNA? |
| I. It binds with an amino acid at its 3' end. |
| II. It has five double-stranded regions. |
| III. It has a codon at one end which recognises the anticodon on messenger RNA. |
| IV. It looks like clover leaf in the three dimensional structure. |
| Codes |
A) I only
B) II and III
C) III and IV
D) I and IV
Correct Answer: A
Solution :
[a] Option [a] is true about tRNA. Anticodon is the sequence of three nucleotides in a transfer RNA molecule that pairs with a complementary sequence of three nucleotides (codon) on a molecule of messenger RNA. tRNA has CCA nucleotides at 3' end that is meant for attaching to a specific amino acid (AA-binding site). Rest options are not true about tRNA. These can be corrected as tRNA has four double-stranded regions. It has anticodon which recognise codon on tRNA. It looks like L-shaped in 3-D structure.
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