BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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carbon
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sulfur
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hydrogen
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phosphorus
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Detailed explanation-1: -Unlike proteins, nucleic acids contained no sulfur. Complete hydrolysis of chromosomal nucleic acids gave inorganic phosphate, 2-deoxyribose (a previously unknown sugar) and four different heterocyclic bases (shown in the following diagram).
Detailed explanation-2: -Answer and Explanation: The chemical element is found only in the structural part of DNA, not in the information carrying part is Phosphorus. The nucleic acids are composed of nucleotides which are then composed of three components: a nitrogenous base, a sugar, and a phosphate group.
Detailed explanation-3: -Nucleic acids contain the same elements as proteins: carbon, hydrogen, oxygen, nitrogen; plus phosphorous (C, H, O, N, and P). Nucleic acids are very large macromolecules composed of repetitive units of the same building blocks, nucleotides, similar to a pearl necklace made of many pearls.
Detailed explanation-4: -DNA does not contain Uracil. In place of Thymine, Uracil is present in RNA.