For giving you understanding ; we need Free O2 but Oxygen is also available in H20 right why dont we use it !!
As the early atmosphere was reducing as there was no free oxygen but it was later produced by chemoautotrophic bacteria !! Living thing release O2 in atmosphere thus making it oxidising in nature and then life evolves !!
Nucleic acids are made up of proteins
DNA and RNA both have the following commonality:
<span>They contain Nitrogen bases A,C, and G. Their Subunits are Nucleotides and the Nucleotide components are sugar, base, phospate. Both also have chainlike molecules. </span>
<span>The genetic information they carry in their nucleic acids (DNA or RNA) is limited for production of their own viral components or "body parts" and these parts are capsid, nucleic acids and envelope (for enveloped viruses).</span>
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can u add a list of answer choices?
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