True about tRNA ?
**Core Concept**
tRNA (transfer RNA) plays a crucial role in protein synthesis by facilitating the translation of messenger RNA (mRNA) into a specific sequence of amino acids. tRNA molecules recognize codons on the mRNA and bring the corresponding amino acids to the ribosome for protein assembly.
**Why the Correct Answer is Right**
During protein synthesis, tRNA molecules recognize codons on the mRNA through specific interactions with the anticodons on the tRNA. This recognition is facilitated by the base pairing between the codon and anticodon, as well as the interaction with ribosomal proteins and other factors. The tRNA molecule then delivers the corresponding amino acid to the ribosome, where it is linked to the growing protein chain through a process called peptide bond formation.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because tRNA does not directly recognize codons on the mRNA; rather, it recognizes codons through its anticodon.
**Option B:** This option is incorrect because tRNA does not synthesize proteins; rather, it delivers amino acids to the ribosome for protein assembly.
**Option C:** This option is incorrect because tRNA does not contain ribosomal RNA; rather, it contains a unique sequence of nucleotides that allows it to recognize codons on the mRNA.
**Clinical Pearl / High-Yield Fact**
One key feature of tRNA molecules is their ability to recognize codons on the mRNA through specific base pairing interactions. This recognition is essential for accurate protein synthesis and is mediated by the anticodon sequence on the tRNA molecule.
**Correct Answer:** Not provided.