SELECT * FROM question_mgmt as q WHERE id=483 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=7 AND chapterId=36 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 12th biology Biotechnology Principles and Process discuss with your teacher and find out how to dist

Question: Discuss with your teacher and find out how to distinguish between
(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.
     

 


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