(Download) CBSE: Class XII BIOTECHNOLOGY Question Paper - 2024

Disclaimer: This website is NOT associated with CBSE, for official website of CBSE visit - www.cbse.gov.in

Question Papers For Board Examinations 2024

Class – XII

Subject – BIOTECHNOLOGY

Subject :- BIOTECHNOLOGY
Class : XII
Year : 2024

SECTION A

1. The natural source of enzyme barnase and barstar, a system used to achieve male sterile plant is : 1
(A) Bacillus subtilis
(B) Bartonella henselae
(C) Bacillus amyloliquefaciens
(D) Barnesville coli

2. Severe combined immunodeficiency disease is caused due to the absence of : 1
(A) Adenosine diphosphate
(B) Adenosine deaminase
(C) Adenosine cyclase
(D) Guanidine nitrate

3. Single nucleotide polymorphisms usually occur in __________ regions. 1
(A) Coding
(B) Non-coding
(C) Regulatory
(D) Exonic

4. Artificial seeds are produced by encapsulating the somatic embryos at the ___________ stage in a protective coating. 1
(A) Torpedo
(B) Globular
(C) Cotyledon
(D) Triangular

5. The peptide hormones and growth factors to promote healthy growth of animal cells in vitro are often derived from : 1
(A) Phenol red
(B) Antibiotics
(C) Blood serum
(D) Amino acids

6. Identify the vector that infects E. coli cells containing F-plasmid and that has a single-stranded circular genome : 1
(A) Agrobacterium tumefaciens
(B) YEp
(C) pBR322
(D) M13

7. An example of secondary metabolites produced by microbial cells include : 1
(A) Vitamins
(B) Alcohol
(C) Acids
(D) Antibiotics