NEETBotanyBiomolecules (B)
Read the following statements and choose the correct option: 1. When nitrogenous bases are attached to a sugar, they are called nucleosides 2. If a phosphate group is attached to nucleosides, it is known as nucleic acids. 3. Nucleic acids like DNA and RNA consist of nucleosides only. 4. The skeletal heterocyclic ring is called as purine and pyrimidine respectively.
Options
- AOnly 1 is correct
- BBoth 1 and 3 are incorrect
- CAll are incorrect
- DOnly 3 is correct
Correct answer
A. Only 1 is correct
Step-by-step solution
When nitrogenous bases attached to a sugar, they are nucleosides. If a phosphate group is also found esterified to the sugar they are called nucleotides. Nucleic acids like DNA and RNA consist of nucleotides only