CELL STRUCTURES AND FUNCTION
BIO MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Carbon
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Hydrogen
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Oxygen
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Nitrogen
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Phosphorous
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Detailed explanation-1: -Phosphorus is an essential component of all cells; the element forms the backbone of nucleic acids, without which cells cannot reproduce. Phosphorus is also incorporated in nucleotides, sugars, proteins, and lipids.
Detailed explanation-2: -Phosphate Group in DNA Deoxyribonucleic acid (DNA) is made up of the building blocks called nucleotides. Each nucleotide comprises of three components such as a phosphate group, a nitrogenous base, and a deoxyribose.
Detailed explanation-3: -In the 1920’s nucleic acids were found to be major components of chromosomes, small gene-carrying bodies in the nuclei of complex cells. Elemental analysis of nucleic acids showed the presence of phosphorus, in addition to the usual C, H, N & O. Unlike proteins, nucleic acids contained no sulfur.