Final answer:
False. In RNA structures, loops can function as amino acid binding sites, with the arginine binding site often found near a helix and hairpin loop. tRNA serves as a link between amino acids and mRNA codons, not introns. Such binding sites are crucial for RNA function and protein translation.
Step-by-step explanation:
The statement 'Loops are Ag-binding sites' is ambiguous without additional context. However, if we consider the broader context provided, loops in certain RNA molecules can indeed function as binding sites for various molecules, including amino acids. For example, the arginine binding site is often found near a junction of a short helix and a hairpin loop in RNA, as described in the supporting materials. These loops have distinct sequences and structures that allow the binding of specific amino acids, like arginine, which is essential for the function of RNA and the translation process in protein synthesis.
Moreover, it is important to understand the role of tRNA and mRNA in protein synthesis. The tRNA acts as a link between amino acids and codons in the mRNA by carrying amino acids to the ribosome and matching their anticodon with the mRNA's codon. Introns in mRNA do not bind to tRNA; instead, tRNA binds to exons coded by mRNA. The genetic code specifies which codons correspond to which amino acids and multiple amino acids can be encoded by different codons.