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11 grade biology others

Which one is not a constituent of nucleic acid? A. Uracil.B. Guanidine.C. Phosphoric acid.D. Ribose sugar.

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1 Year agoGrade
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1 Answer

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1 Year ago

The correct answer is B. Guanidine. Guanidine is not a constituent of nucleic acids. Nucleic acids, such as DNA and RNA, are composed of nucleotides, which consist of a sugar (either deoxyribose in DNA or ribose in RNA), a phosphate group, and a nitrogenous base. Uracil is one of the nitrogenous bases found in RNA, phosphoric acid is part of the phosphate group, and ribose sugar is the sugar component of RNA. Guanidine is not a standard component of nucleic acids.

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