Question

Amino acid is attached to which site of tRNA?

• A. Anticodon loop
• B. 3’ end
• C. 5’ end
• D. D-loop

Answer 1

The Correct Option is B

The amino acid attaches to the 3’ end of the tRNA molecule. This site carries a CCA sequence where the specific amino acid binds, allowing tRNA to deliver the correct amino acid during protein synthesis.

Answer 2

The amino acid is attached to the 3' end of the tRNA molecule. The tRNA has a three-dimensional structure with an anticodon loop that pairs with the mRNA codon during translation, but the amino acid is attached at the 3' end of the tRNA. This attachment is facilitated by an enzyme called aminoacyl-tRNA synthetase.

• The anticodon loop is involved in recognizing the complementary codon on mRNA but is not the site where the amino acid is attached.
• The 5' end is the start of the tRNA, but it does not play a role in amino acid attachment.
• The D-loop is part of the tRNA's structure but does not participate in the attachment of the amino acid.