In RNA, which base forms complementary hydrogen bonds with guanine (G) during base pairing?

Which feature most reliably differentiates RNA from DNA in most cells?

Which statement correctly describes a key difference between DNA and RNA?

In a typical introductory genetics context, how many major types of RNA are commonly emphasized for their roles in gene expression?

Which statement correctly describes a key difference between DNA and RNA?

In genetics, DNA and RNA are classified as which type of biomolecule?

In nucleic acids, which RNA base is complementary to thymine ($T$) by standard base-pairing rules?

In molecular genetics, which component is found in both DNA and RNA?

In cells, which class of RNA is generally the most variable in sequence and size among species and cell types?