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Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are made up of nucleic acids found in the nuclei of living cells. They are the vehicles of genetic inheritance.

Nucleic acids are condensation polymers of nucleotides. To understand their functions you will find it helpful to look at how their molecules are built up and the structures of these molecules.
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Nucleic acids can't be formed from sugars alone because they are formed from units called monomers, which are nucleotides.

Nucleic acids are biopolymers formed from units called monomers, which are nucleotides.

Nucleotides are formed from the union of:

  • A pentose type sugar.
  • A nitrogenous base.

Without the combination of a nitrogenous base (for example, adenine) and a type of sugar (deoxyribose), nucleotides could not be formed.

Nucleic acids are macromolecules or biological polymers present in the cells of living beings, in this case, they are polymers of nucleotides linked by phosphodiester bonds.

Therefore, we can conclude that nucleic acids cannot be formed from sugars alone because each nucleic acid molecule is composed of the repetition of a type of nucleotides, where for its formation the union of pentose (sugar) and a nitrogenous base is necessary.

Learn more here: https://brainly.com/question/13945681

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