Unlike DNA, which typically forms a helical structure, different molecules of RNA can fold into a variety of three-dimensional shapes. This is largely because RNA A)contains uracil and uses ribose as the sugar. B)bases cannot form hydrogen bonds with each other. C)nucleotides use a different chemical linkage between nucleotides compared to DNA. D)is single-stranded. Multiple Choice

This is largely because RNA is single-stranded. The correct option is D.

Explanation:

RNA ( Ribonucleic acid) is a single stranded nucleic acid which is composed of:

--> A nitrogenous base: RNA consists of four nitrogenous bases which includes adenine, cytosine, uracil, and guanine. Uracil is a pyrimidine that is structurally similar to the thymine, another pyrimidine that is found in DNA (Deoxyribonucleic acid).

--> A five-carbon sugar: it contains ribose as its pentose sugar and

--> A phosphate group.

The main function of RNA is to convert the information stored in DNA into proteins.

RNA strand can undergo significant intramolecular base pairing to take on a three-dimensional structure. This is because it is single-stranded. This is due to the presence of a hydroxyl group at the 2' position of the ribose sugar. The presence of this functional group causes the helix to adopt the A-form geometry rather than the B-form most commonly observed in DNA.

b would be the right answer

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