The number of oxygen atoms present in a nucle | vedclass

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(B) The base present only in $RNA$ is Uracil.$A$ nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate group.$1$. Uracil $(C_4H_4

Vedclass · Accepted Answer

$9$

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(B) The base present only in $RNA$ is Uracil.$A$ nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate group.$1$. Uracil $(C_4H_4N_2O_2)$ contains $2$ oxygen atoms.$2$. Ribose sugar $(C_5H_{10}O_5)$ contains $5$ oxygen atoms.$3$. The phosphate group $(PO_4^{3-})$ contributes $4$ oxygen atoms.When these components combine to form a nucleotide (Uridylic acid), water molecules are removed during the formation of the glycosidic bond and the ester bond.- One water molecule $(H_2O)$ is removed between the base and the sugar.- One water molecule $(H_2O)$ is removed between the sugar and the phosphate group.Total oxygen atoms = (Oxygen in Uracil + Oxygen in Ribose + Oxygen in Phosphate) - (Oxygen in $2$ water molecules)Total oxygen atoms = $(2 + 5 + 4) - 2 = 11 - 2 = 9$.Therefore, the number of oxygen atoms in the nucleotide is $9$.

The number of oxygen atoms present in a nucleotide formed from a base that is present only in $RNA$ is ....

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