(Download) CBSE Class-12 Sample Paper 2024-25 : Biotechnology

• Sample Question Paper (Term-1) 2024-25
• Subject Name : Biotechnology
• Time Allowed: 90
• Minutes Maximum Marks: 40

SECTION - A

1 An approach that utilises analysis of genome present in different environment to screen presence of variety of molecules.
A. Metagenomics
B. Proteomics
C. Strain preservation
D. Mutant selection

2 In animal cell culture, the CO2 levels in the incubator is usually maintained at
A. 1-2%
B. 3-4%
C. 5-10%
D. 11-15%

3 Even if we know where the genes are in each genome, it’s difficult to count them due to:
(i) splice variants
(ii) overlapping genes
(iii) Post – trancriptional events
(iv) Mutations
A. (i), (iii)
B. (i), (ii)
C. (iii), (iv)
D. (ii), (iv)

4 Avocado growers in Kerela want to find a way to genetically engineer their crop to prevent it from ripening during shipping. This can be achieved by introducingA. genes for carotenoid biosynthesis. 
B. gene from Bacillus amyloliquefaciens.
C. ethylene forming gene(s).
D. gene for protein containing sulphur rich amino acids.

5 Microbial species used for commercial production of citric acid isA. Saccharomyces cerevisiae
B. Aspergillus niger
C. Streptomyces griseus
D. Aspergillus oryzae

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