NTA Abhyas NEET2020ChemistryBiomoleculesPractice
The main difference between DNA and RNA is ____
Options
- Ain the nature of sugar alone.
- Bin the nature of purines alone.
- Cin the nature of sugar and pyrimidines.
- Dnone of these.
Correct answer
C. in the nature of sugar and pyrimidines.
Step-by-step solution
The heterocyclic compounds in nucleic acids are the nitrogenous bases named adenine, guanine, uracil, cytosine, and thymine. Adenine and guanine are substituted purines while the rest are substituted pyrimidines. The skeletal heterocyclic ring is composed of purine and pyrimidine. The sugar found in polynucleotides is either ribose (a monosaccharide pentose) or 2’ deoxyribose. A nucleic acid containing deoxyribose is called deoxyribonucleic acid (DNA), while that which contains ribose is called ribonucleic acid (RN