Question

RNA is ____ and contains the nitrogenous base ____, which is absent in DNA. single stranded;...

RNA is ____ and contains the nitrogenous base ____, which is absent in DNA.

single stranded; thymine

double stranded; uracil

single stranded; uracil

double stranded; thymine

single stranded; cytosine
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Answer #1

Ans. (c) single stranded; uracil

RNA and DNA are genetic material for all of the organisms on earth. RNA is single stranded nucleic acid with lipids, proteins and carbohydrates, constitute the four major macromolecules essential for all known forms of life. RNA has ribose sugar, whereas DNA has deoxyribose sugar and are double stranded. DNA has nucleotides such as Adenine, Guanine, Cytosine and Thymine; whereas in RNA Thymine is replaced by Uracil.

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