Which two components make up the structure of ribosomes?

Ribosomes are vital cellular structures responsible for protein synthesis and are composed of ribosomal RNA (rRNA) and proteins. The correct answer highlights that ribosomes consist of two primary components: large and small subunits, which contain both rRNA and various proteins.

The large subunit and small subunit come together during the process of translation to facilitate the assembly of amino acids into polypeptide chains, following the instructions from messenger RNA (mRNA). The rRNA plays a crucial role in the ribosome's structure and function, including catalyzing peptide bond formation and ensuring the proper alignment of messenger RNA and transfer RNA (tRNA) during translation.

This composition underscores the complexity of ribosomes, emphasizing the significant role that rRNA has, alongside proteins, in maintaining the ribosome's architecture and functionality in the cellular machinery.