Question

Uric acid forms in the body by
A. Phospholipid
B. Glucose
C. DNA
D. RNA

Answer 1

Hint: Uric acid is a waste by-product this is formed in our body when the purines breakdown which is found in some of the food. Most of the uric acid leaves our body when we urinate and also leave through our digestive tract. If there is a lot of uric acid build up in our body it results in a disease called gout.

Complete answer:
Phospholipid belongs to the class of lipids whose molecule has a hydrophilic head that contains a phosphate group and has two hydrophobic tails which are derived from fatty acids.
-Glucose is a simple sugar with the molecular formula of C$_6$H$_{12}$O$_6$ they fall under the category of monosaccharides which is a carbohydrate. Glucose is mainly synthesized by plants.
-DNA is made up of nucleotide molecules. Each molecule of nucleotide contains a phosphate group, nitrogen base, and a phosphate group. The four types of nitrogen bases are adenine, guanine, thymine, and cytosine the DNA is made up of purines and pyrimidines. Purine is also entered into our body through a food source. The purine is broken down into uric acid. So, the DNA forms uric acid in our body.
-RNA is made up of four nitrogen bases namely adenine, guanine, uracil, and cytosine.

Hence the correct answer is DNA, option C.

Note: Uric acid is a heterocyclic compound. Many enzymes are involved in the conversion of two purines (adenine and guanine) to uric acid. First, the adenosine monophosphate is converted to inosine by deamination and dephosphorylation. Guanine monophosphate is converted to guanosine by nucleotidase. Now the inosine and guanosine are converted to purine bases hypoxanthine and guanine. And by further oxidation and deamination xanthine is formed and now this xanthine is again oxidized to form the final product, uric acid.