Which of the following best describes the structure of RNA? Double-stranded helix with deoxyribose sugar Single-stranded with ribose sugar Double-stranded with ribose sugar Single-stranded with thymine bases

Single-stranded with ribose sugar. RNA is a single-stranded nucleic acid that contains the sugar ribose and the bases adenine, guanine, cytosine, and uracil (instead of thymine, which is found in DNA).<br />