Page 239 - The Manga Guide to Biochemistry

Here’s what a single rRNA looks like:

Huh? It looks like a maze.
If you look carefully, you can see that it’s actually just one RNA strand folded
in a complex way. The ends are marked 3´ and 5´.
Oh! You’re right!
When an RNA strand folds, its bases pair with each other. In the image above,
those pairings are represented by the transverse lines, or “ladder rungs.” Base
pairing within a single strand is a feature of RNA not found in DNA: It can fold
into a variety of forms according to differences in base sequences.

Wow, cool! They look like little line drawings.

Molecular Biology and the Biochemistry of Nucleic Acids 225