Why cant antibiotics cure viruses?

because Viruses don't have cell walls that can be attacked by antibiotics

Explanation:Viruses don't have cell walls that can be attacked by antibiotics; instead they are surrounded by a protective protein coat. Unlike bacteria, which attack your body's cells from the outside, viruses actually move into, live in and make copies of themselves in your body's cells.

the backbone of the dna and rna compound is sugar phosphate.