NEETChemistryBiomolecules
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Uridylic acid is a nucleoside found exclusively in RNA. Reason (R): Uridylic acid is formed when uracil is linked to a ribose sugar via an N-glycosidic bond, and a phosphate group is esterified to the sugar. In the light of the above statements, choose the most appropriate answer from the options g
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
D. (A) is false but (R) is true
Step-by-step solution
Assertion (A) is false. Uridylic acid is a nucleotide, not a nucleoside. The corresponding nucleoside is uridine. Reason (R) is true. Uridylic acid is formed when the nitrogenous base uracil is linked to a ribose sugar via an N-glycosidic bond to form uridine, and a phosphate group is esterified to the sugar to form the complete nucleotide. Answer: (A) is false but (R) is true