Question 48 of 83
Q.Write the differences between DNA and RNA.
Tamil Nadu DgeTamil Nadu HSC (DGE) Board 2017Subjective· 5mImportance★★★★★
58% · 48/83 Questions
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Start your 14-day free trial to unlock the full solution →DNA is the stable, double-stranded storage molecule; RNA is the more reactive, usually single-stranded working copy used to make proteins.
| Feature | DNA | RNA |
|---|---|---|
| Sugar | Deoxyribose (lacks a 2'-OH group) | Ribose (has a 2'-OH group) |
| Strandedness | Usually double-stranded | Usually single-stranded |
| Bases | Adenine, Guanine, Cytosine, Thymine | Adenine, Guanine, Cytosine, Uracil (no Thymine) |
| Function | Stores and transmits hereditary (genetic) information | Directs protein synthesis (as mRNA, tRNA, rRNA); acts as the genome in some RNA viruses |
| Stability | More stable, chemically less reactive | Less stable, more reactive (the 2'-OH makes it prone to hydrolysis) |
| Location | Mainly the nucleus (also mitochondria, chloroplast) | Nucleus and cytoplasm (especially ribosomes) |
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