Discuss with your teacher and find out h | Class 12 Biology Chapter Biotechnology Principles and Process, Biotechnology Principles and Process NCERT Solutions

Q12. 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

(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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Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Biotechnology Principles and Process.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Important Questions & Answers

Why is this answer important for exams?

This question is important because it tests key concepts from the NCERT syllabus and is frequently asked in CBSE exams.

Which NCERT concept is used in this question?

This question is based on core NCERT concepts explained in the chapter and should be revised thoroughly before exams.

What common mistakes should be avoided in this question?

Students often lose marks by skipping steps, writing incomplete explanations, or misunderstanding keywords used in the question.

What is the correct answer to: 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?

(a) Plasmid DNA and chromosomal DNA





Plasmid DNA



Chromosomal DNA





Plasmid DNA is an extra-chromosomal DNA molecule in bacteria that is capable o...

How do you solve 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 step by step?

Step-by-step explanation:
• (a) Plasmid DNA and chromosomal DNA



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