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Sagot :
Answer:
deoxyribonucleotides consist of a nitrogenous base and a pentose sugar with the nitrogenous bases covalently bonded to make the primary structure
Explanation:
A deoxyribonucleotide is a nucleotide that consists of a nitrogenous base (i.e., purine or pyrimidine) that binds to deoxyribose (i.e., a pentose sugar-containing five carbon atoms), and one phosphate group attached to the nitrogenous base. In the DNA, there are four types of nitrogenous bases: two purines (Adenine and Guanine), and two pyrimidines (Cytosine and Thymine). All these bases are attached to 1' carbon (C1') of deoxyribose by a glycosidic bond. A nucleoside is a nitrogenous base linked to ribose (in RNA) or deoxyribose (in DNA).
The untrue statement about the structure of DNA is deoxyribonucleotide consist of a nitrogenous base and a pentose sugar with the nitrogenous bases covalently bonded to make the primary structure.
DEOXYRIBONUCLEIC ACID:
- Deoxyribonucleic acid is a type of nucleic acid that stores genetic information in living cells.
- DNA is a polymer made up of monomers called nucleotides. The nucleotides are the basic unit of the DNA molecule.
- A nucleotide comprises of three components namely: nitrogenous base, pentose sugar and phosphate groups.
- A covalent bond called phosphodiester bond connect nucleotides in the primary structure of DNA.
- Therefore, the untrue statement about the structure of DNA is deoxyribonucleotide consist of a nitrogenous base and a pentose sugar with the nitrogenous bases covalently bonded to make the primary structure.
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