AP BIOLOGY

Detailed explanation-1: -RNA does not have double stranded -helix structure. Helixes present in RNA are single-stranded but sometimes they fold back on themselves to form a double helix structure. RNA has the ability to replicate. It is present in the nucleus of the cell.

Detailed explanation-2: -Although RNA is a single-stranded molecule, researchers soon discovered that it can form double-stranded structures, which are important to its function.

Detailed explanation-3: -DNA double helix means that the two-stranded structure of DNA structure is common knowledge, RNA’s single stranded format is not as well known. RNA can form into double-stranded structures, such as during translation, when mRNA and tRNA molecules pair.

Detailed explanation-4: -RNA structure differs from the DNA structure in three specific ways. Both are nucleic acids and made out of nucleotides; however, RNA is single-stranded while DNA is double-stranded. RNA nucleotides, like those from DNA, have three parts: a 5-carbon sugar, a phosphate group, and a base.

Detailed explanation-5: -There are two reasons why RNA is generally single-stranded: RNAses are extremely abundant in most cells. Usually, double-stranded RNA is associated with a viral infection and is destroyed rapidly. Double-stranded RNA is not as stable as double-stranded DNA.