Question

Nucleotides contain sugar, a phosphate group, and a nitrogen base. Which of the following is a nitrogen base?
(1 point)

Answer 1

Answer:

A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) takes the place of thymine. Nucleic acids are giant biomolecules made of monomers called nucleotides. Nucleotides have three components: pentose sugar (5-carbon sugar), phosphate group, and a nitrogenous base. The nucleic acids are of two major types: natural and synthetic nucleic acids. They contain a sugar phosphate and nitrogen base.

Answer 2

A nitrogen base can be either purine or pyrimidine. Adenine and guanine are Purines, while Thymine, Uracil, and Cytokine derive from Pyrimidines.

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Let us first make a quick review,

• Nucleotides are monomers composed of a sugar, a phosphate group and a nitrogenated base.  

• Nucleotides joined by their extremes compose polymeres like the DNA and RNA.

• Nitrogenated bases are molecules carrying nitrogen and exhibiting the chemical properties of a base.  

• These bases are purines and pyrimidines.

⇒ Adenine and guanine derive from purines,

⇒ Thymine, Uracil, and Cytokine derive from Pyrimidines.

According to this information, you should check among the options if you have any of the followings: adenine, guanine, thymine, uracil, or cyokine. If any of these are present, that is the correct option.

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