Question

Nucleic acids were first discovered in pus cells in the year (A) 1869
(B) 1912
(C) 1931
(D) 1953

Answer 1

Hint: The Nucleic acids were first discovered in the pus cells in that year in which very famous chemist Robert Robertson and Maria Linden a German bacteriologist and zoologist were born.
Complete step by step answer:
Nucleic acids were first discovered in pus cells in the year 1869 by very famous Swiss biologist Friedrich Miescher.Nucleic acids are organic molecules or substances present in living organisms, especially in DNA and RNA.
Nucleic acids are composed of nucleotides. Nucleotides are the monomers that are made up of three components i.e a 5-carbon sugar, a phosphate group, and a nitrogenous base. On the other side, a nucleoside is a molecule or polymer consisting of only sugar and a nitrogenous base.
If the sugar is a compound sugar which is ribose, the polymer is RNA (ribonucleic acid) and if the sugar is derived from ribose as deoxyribose, the polymer is DNA (deoxyribonucleic acid).
The nucleic acid is very useful for living organisms. They help in creating and storing genetic information of the organism and transferring it to the next generation. Nucleic acids are generally found to be very large molecules.
So, the correct answer is ‘(A) 1869'.

Note: Both DNA and RNA are a type of nucleic acid, but they both have many dissimilarities. The most common dissimilarity is that DNA is double-stranded while RNA is single-stranded. One more major difference in them is in nitrogenous bases. Four nitrogenous bases present in DNA are adenine, guanine, cytosine, and thymine. Four nitrogenous bases present in RNA are Adenine, Guanine, Cytosine, and Uracil.