Question -
Answer -
(a) Plasmid DNA and chromosomal DNA
(b) RNA and DNA
(c) Exonuclease and Endonuclease
Answer
(a) Plasmid DNA and chromosomal DNA
| Plasmid DNA | Chromosomal DNA |
| Plasmid DNA is an extra-chromosomal DNA molecule in bacteria that is capable of replicating, independent of chromosomal DNA. | Chromosomal DNA is the entire DNA of an organism present inside chromosomes. |
(b) RNA and DNA
| RNA | DNA |
| 1. | RNA is a single stranded molecule. | DNA is a double stranded molecule. |
| 2. | It contains ribose sugar. | It contains deoxyribose sugar. |
| 3. | The pyrimidines in RNA are adenine and uracil. | The pyrimidines in DNA are adenine and thymine. |
| 4 | RNA cannot replicate itself. | DNA molecules have the ability to replicate. |
| 5 | It is a component of the ribosomes. | It is a component of the chromosomes. |
(c) Exonuclease and Endonuclease
| Exonuclease | Endonuclease |
| It is a type of restriction enzyme that removes the nucleotide from 5’ or 3’ ends of the DNA molecule. | It is a type of restriction enzyme that makes a cut within the DNA at a specific site to generate sticky ends. |