why-do-nucleic-acid-bases-absorb-uv-light-at-260-nm-while-proteins-absorb-at-280

Question

Why do nucleic acid bases absorb UV light at 260 nm, while proteins absorb at 280 nm?

Accepted Answer

Nucleic acid bases have different electronic structures compared to proteins.

Answer

Nucleic acid bases contain more aromatic rings than proteins.

Answer

Proteins have a higher concentration of nitrogen atoms.

Answer

Proteins are larger molecules than nucleic acid bases.