CBSE Class 12th Biotechnology 2024 Answer Key, Question Paper and Exam Analysis

CBSE Class 12th Biotechnology 2024: The day 2 of the CBSE Class 12 Examination 2024 was held today, Feb 16, 2024, from 10:30 AM to 1:30 PM. As scheduled, Biotechnology, Knowledge Tradition and Practices of India, Electronics Technology, shorthand (English and Hindi), Food nutrition & dietetics, Library & information science, Banking, Early Childhood Care and Education exams were held today.

Students who attended the Class 12 Biotechnology examination can access the CBSE Class 12th Biotechnology 2024 Answer Key, Question Paper and Exam Analysis here once available.

Also Read: CBSE Class 12th Entrepreneurship 2024 Answer Key, Question Paper and Exam Analysis

CBSE Class 12th Biotechnology 2024: Question Paper

The CBSE Class 12 Biotechnology 2024 question paper will be soon available for downloading. Students are advised to keep an eye on this space for further updates. Meanwhile, the important questions of Class 12 Biotechnology 2024 are listed below.

• Question: How is the copy number of plasmid vector and yield of the recombinant protein related to each other?
  Answer: The copy number of plasmid vector is directly related to the yield of recombinant protein. Higher the copy number of vector plasmid, greater is the copy number of gene and consequently, the yield of the recombinant protein is in higher amounts.
• Question: Can exonuclease be used while producing a recombinant DNA molecule?
  Answer: No, an exonuclease cannot be used while producing a recombinant DNA. This is because an exonuclease degrades the DNA. It cannot produce DNA fragments with sticky ends.
• Question: What are the features of a plasmid being used as a cloning vector?
  Answer: The characteristics of plasmids being used as a cloning vector are: 
  It should have an origin of replication, It should have a selectable marker, and It should have restriction sites.
• Question: What are competent cells? What does the word “competent” refer to?
  Answer: Competent cells are those that allow the foreign DNA to incorporate into the host by a slight alteration in the cell walls. “Competent” means the ability of a cell to intake foreign DNA.
• Question: What do “Eco”, “R” and “I” refer to in the enzyme EcoRI?
  Answer: “Eco” refers to the species from which it is taken, “R” refers to the particular strain, and “I” states that it was the first enzyme isolated from this strain.
• Question: Why are proteases added while isolating the DNA?
  Answer: Proteases are added to degrade the proteins so that they do not interfere with the downstream DNA treatment.
• Question: If the “denaturation” step is missed during PCR, what would be its effect on the entire process?
  Answer: If the denaturation process is missed, there will no separation of DNA strands, the primers will not anneal to the template strands and eventually, amplification of DNA will not occur.
• Question: Name a recombinant vaccine.
  Answer: Hepatitis B vaccine is a recombinant vaccine.

CBSE Class 12th Biotechnology 2024: Answer Key

Students who attended the CBSE Class 12th Biotechnology 2024 examination can access the unofficial Biotechnology answer key which will be available soon. Students can use the unofficial CBSE Class 12 Biotechnology 2024 Answer Key to analyse their performance. 

CBSE Class 12th Biotechnology 2024: Exam Analysis

The detailed CBSE Class 12 Biotechnology 2024 exam analysis is available in the table below. 

The CBSE Class 12 Examination 2024 will conclude on Apr 2, 2024, and students can expect the CBSE Class 12 Results 2024 to be announced by second week of May 2024.