Question

Which of the following is incorrect?
A Phosphate is covalently bonded to a nitrogenous base.
B Sugar is covalently bonded to a nitrogenous base.
C Nitrogenous bases are hydrogen bonded to each other.
D Sugar and nitrogenous bases from peptide bonds.

Answer 1

Hint Nucleic acid is a type of macromolecule that can be present in all organisms and viruses. Nucleic acids are responsible for the storage and expression of genetic information. The information a cell needs to create proteins is encoded in deoxyribonucleic acid (DNA).

Complete step by step answer:
Long chain polymers of nucleotides are known as nucleic acids. Phosphoric acid esters of nucleosides are called nucleotides. When nitrogenous bases and pentose sugars establish a glycosidic link, nucleosides are produced. A single chain of nucleotides has all of its bonds be covalent. Two nucleotide chains linked by hydrogen bonding between nitrogen bases in DNA.
A nucleic acid is a polymeric macromolecule made up of repeated units of monomeric 'nucleotides,' each of which contains a nitrogenous heterocyclic base (purine or pyrimidine), a pentose five carbon sugar (ribose or 2′-deoxyribose), and one to three phosphate groups.
Adenine and thymine make two hydrogen bonds, while guanine and cytosine form three hydrogen bonds. Multiple peptide chains make up proteins. Peptides are amino acid-based polymers. Peptide bonds link amino acids together in a peptide chain.
Nucleic acid is a type of macromolecule that can be present in all organisms and viruses. Nucleic acids are responsible for the storage and expression of genetic information. The information a cell needs to create proteins is encoded in deoxyribonucleic acid (DNA).

As a result, option D is the proper response.

Note: Nucleic acids have two main functions:
-The transmission of inherent characteristics from one generation to the next is mediated by DNA. Heredity is the term for the process of transmission.
-Protein synthesis in a cell is controlled by nucleic acids (both DNA and RNA).