Which RNA is globular?

Which RNA is globular?

• A. mRNA
• B. tRNA
• C. rRNA
• D. miRNA

Answer: (C)

Globular RNA refers to molecules that fold into compact, globe-like shapes because of extensive base-pairing and long-range interactions. Ribosomal RNA forms the core of the ribosome and folds into large, highly structured domains that pack together into a dense, globular architecture. This compact folding supports its role as both scaffold and catalytic component of the ribosome. In contrast, messenger RNA is typically long and more extended, with variable secondary structures along its length. Transfer RNA has a distinctive cloverleaf shape in two dimensions and an L-shaped three-dimensional form that is compact but not globe-like. MicroRNA is a short, single-stranded molecule after processing and does not form a globular structure. So ribosomal RNA is the RNA that is globular.

Globular RNA refers to molecules that fold into compact, globe-like shapes because of extensive base-pairing and long-range interactions. Ribosomal RNA forms the core of the ribosome and folds into large, highly structured domains that pack together into a dense, globular architecture. This compact folding supports its role as both scaffold and catalytic component of the ribosome. In contrast, messenger RNA is typically long and more extended, with variable secondary structures along its length. Transfer RNA has a distinctive cloverleaf shape in two dimensions and an L-shaped three-dimensional form that is compact but not globe-like. MicroRNA is a short, single-stranded molecule after processing and does not form a globular structure. So ribosomal RNA is the RNA that is globular.