Question

rna differs from dna because rna
multiple choice
is double - stranded, whereas dna is not.
is never single - stranded, whereas dna may or may not be.
is single - stranded, whereas dna is double - stranded.
is replicated along with dna but does not require strand separation like dna.
can self - replicate, whereas dna replication requires enzymes.

Explanation:

RNA is typically single - stranded, while DNA is double - stranded. DNA replication requires enzymes like DNA polymerase, and RNA is not double - stranded. RNA can be single - stranded (e.g., mRNA, tRNA, rRNA in most cases). RNA replication (in some viruses) is different from DNA replication which involves strand separation.

Answer:

is single - stranded, whereas DNA is double - stranded.