Regarding tRNA structure, which of the following statements is correct?
A) The nucleotide sequence, CCA, is always present at the terminus of functional tRNA molecules.
B) There is appreciable secondary structure in native tRNA molecules.
C) An unusual nucleoside called pseudouridine, in which there is a carbon-carbon linkage between ribose and uracil, is almost always present in tRNA.
D) All of the above.
E) None of the above.

Question

Quizplus · Accepted Answer

All the statements provided are correct regarding tRNA structure. The CCA sequence at the 3' end is a characteristic feature of tRNA molecules, essential for the attachment of amino acids. tRNA molecules also exhibit significant secondary structure, forming a characteristic cloverleaf pattern. Additionally, tRNAs often contain unusual modified nucleosides, including pseudouridine, which is notable for its unique carbon-carbon bond between the ribose and the base.

Regarding TRNA Structure, Which of the Following Statements Is Correct