NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Biology
- Chapter
- Chapter
NEET 2026 · Biology · Chapter
Consider the following three biomolecules: X: Uridine Y: Cytidylic...
Consider the following three biomolecules:
X: Uridine
Y: Cytidylic acid
Z: Guanine
Choose the option that correctly categorizes X, Y, and Z.
X: Uridine
Y: Cytidylic acid
Z: Guanine
Choose the option that correctly categorizes X, Y, and Z.
Options
- AX - Nucleotide; Y - Nucleoside; Z - Pyrimidine base
- BX - Nucleoside; Y - Nucleotide; Z - Purine base
- CX - Nucleoside; Y - Nucleotide; Z - Pyrimidine base
- DX - Purine base; Y - Nucleotide; Z - Nucleoside
Correct answer
B. X - Nucleoside; Y - Nucleotide; Z - Purine base
Step-by-step solution
X is Uridine, which is formed by the attachment of a nitrogenous base (uracil) to a pentose sugar (ribose). Thus, it is a nucleoside.
Y is Cytidylic acid, which consists of a nitrogenous base (cytosine), a pentose sugar (ribose), and a phosphate group. Thus, it is a nucleotide.
Z is Guanine, which is a nitrogenous base with a double-ring structure. Thus, it is a purine base.
Answer: X - Nucleoside; Y - Nucleotide; Z - Purine base
Y is Cytidylic acid, which consists of a nitrogenous base (cytosine), a pentose sugar (ribose), and a phosphate group. Thus, it is a nucleotide.
Z is Guanine, which is a nitrogenous base with a double-ring structure. Thus, it is a purine base.
Answer: X - Nucleoside; Y - Nucleotide; Z - Purine base