Which RNA type forms the core structural and catalytic component of ribosomes?

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Multiple Choice

Which RNA type forms the core structural and catalytic component of ribosomes?

Explanation:
Ribosomes are ribonucleoprotein machines, and the chemistry of protein synthesis is driven by the RNA component itself. This RNA forms the catalytic core, the peptidyl transferase center, where peptide bonds are formed, and it also helps position the mRNA and tRNA for accurate decoding. That makes ribosomal RNA the essential structural and catalytic element of the ribosome. The other RNA types have different roles—microRNA regulates gene expression, messenger RNA carries the genetic code, and transfer RNA delivers amino acids—so they don’t constitute the ribosome’s catalytic center.

Ribosomes are ribonucleoprotein machines, and the chemistry of protein synthesis is driven by the RNA component itself. This RNA forms the catalytic core, the peptidyl transferase center, where peptide bonds are formed, and it also helps position the mRNA and tRNA for accurate decoding. That makes ribosomal RNA the essential structural and catalytic element of the ribosome. The other RNA types have different roles—microRNA regulates gene expression, messenger RNA carries the genetic code, and transfer RNA delivers amino acids—so they don’t constitute the ribosome’s catalytic center.

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