(Download) CBSE Class-12 Sample Paper 2023-24 : Biotechnology

• Sample Question Paper (Term-1) 2023-24
• Subject Name : Biotechnology
• Time Allowed: 90
• Minutes Maximum Marks: 40

SECTION - A

1 Type II Restriction Enzymes are employed and not type I and type III, in Recombinant DNA technology because :
(a) They recognise a palindromic recognition sequence.
(b) They lyse specifically within the restriction site.
(c) They cleave 1 bp away from the 5’ end.
(d) They cleave both the DNA strands simultaneously.

2 A bull has trouble walking and getting up, He is nervous and violent. This condition is getting worse with time. The causative agent responsible for these symptoms could be :
(a) Bacillus anthracis
(b) Virion
(c) Mycobacterium bovis
(d) Prion

3 Turbidity measurement method for ascertaining the number of microbial cells in a liquid culture is not accurate. Choose the correct explanation.
(a) It measures both live and dead cells.
(b) It measures low amount of cells too.
(c) It is difficult and non sensitive technique.
(d) It destroys the sample solution. 

4 To increase the efficiency of picking of insert by a vector, Dr. Kumar decided to make use of ___________________ in the genetic engineering protocol. Identify the tool.
(a) DNA Ligase
(b) DNA Phosphatase
(c) Alkaline Phosphatase
(d) DNA Polymerase

5 Example of Single Cell Protein
(a) Yeast
(b) Bacteria
(c) Algae
(d) All of these 

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