Question

Nucleic acid are polymers of
A.Nucleotides
B.Nucleosides
C.Nuclei of heavy metals
D.Proteins

Answer 1

Hint: To answer this question, you should recall the concept of polymerization. Polymerization refers to the process of molecules called monomers reacting together and produces three-dimensional networks or polymer chains is called polymerization.

Complete step by step answer:
- DNA is composed of a pentose sugar, phosphoric acid and some cyclic bases containing nitrogen. The sugar moiety present in DNA molecules is \[\beta - D - 2 - \] deoxyribose. The cyclic bases that have nitrogen in them are adenine (A), guanine (G), cytosine(C) and thymine (T). These bases and their arrangement in the molecules of DNA play an important role in the storage of information from one generation to the next one. DNA has a double-strand helical structure in which the strands are complementary to each other.
- The RNA molecule is also composed of phosphoric acid, a pentose sugar and some cyclic bases containing nitrogen. RNA has \[\beta - D - \] ribose in it as the sugar moiety. The heterocyclic bases present in RNA are adenine (A), guanine (G), cytosine(C) and uracil (U). In RNA the fourth base is different from that of DNA.
- The RNA generally consists of a single strand which sometimes folds back; that results in a double helix structure. DNA and RNA are termed as nucleic acids. They are polymers of nucleotides. A nucleotide consists of a base, a sugar molecule and a phosphate molecule.

Hence, the correct answer is option A.

Note:
You should know about the Functions of Nucleic Acids: Nucleic acids are responsible for the transmission of inherent characters from parent to offspring. They are responsible for the synthesis of protein in our body. DNA fingerprinting is a method used by forensic experts to determine paternity. It is also used for the identification of criminals. It has also played a major role in studies regarding biological evolution and genetics.