A) 3end
B) 5end
C) anticodon
D) loop
Correct Answer: A
Solution :
t-RNA (soluble RNA) is smallest RNA- R. Holley proposed clover leaf model for yeast t-RNA3 a. It has following structural peculiarities- [a] All t-RNA molecule have CCA sequence at 3 end. This is called, amino acid attachment site. [b] T-stem contain \[T\psi Y\] loop, which involved in the binding of C-RNA molecule to the ribosome. [c] In anticodon stem the unpaired third, fourth and fifth bases constitute the anticodon. Which permits complementary pairing with triplet codon on the m-RNA. [d] D-stem is composed of three or four base pairs and DHU loop. D loop help in binding of amino acyl synthetase.
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