Question:
Nucleic acid was first isolated from pus cells by
Nucleic acid was first isolated from pus cells by
Updated On: Jul 28, 2022
- Freidrich Miescher
- Altmann
- Waldeyer
- Hoffmeister.
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The Correct Option is A
Solution and Explanation
Nucleic acids include the largest molecule formed by organisms. They were first isolated by Swiss scientist F. Miescher (1869) from the nuclei of pus cells (dead white blood cells or leukocytes) and named 'nuclein'.??ater on, it was found that nuclein had acidic properties and then was renamed as nucleic acid by Altmann in 1899.
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Concepts Used:
Nucleic acids
Nucleic acids are explained as long-chain polymeric molecules, where the monomer (the repeating unit) is referred to as the nucleotides. Thus many times nucleic acids are referred to as polynucleotides. The two main kinds of nucleic acids are-
Deoxyribonucleic Acid (DNA)
Chemically, DNA is a composition of a pentose sugar, phosphoric acid, and some cyclic bases that have nitrogen in them. DNA has β-D-2-deoxyribose in it, in the form of the sugar moiety.
Ribonucleic Acid (RNA)
The RNA molecule is a composition of phosphoric acid, a pentose sugar, and some cyclic bases containing nitrogen. The sugar moiety inside RNA molecules is β-D-ribose.