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(Download) CBSE Class-12 Sample Paper 2021-22 : Biotechnology

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Sample Question Paper (Term-1) 2021-22

Subject Name : Biotechnology

Subject Code : 045

Time Allowed: 90

Minutes Maximum Marks: 40

SECTION - A

Section – A consists of 24 questions. Attempt any 20 questions from this section. The first attempted 20 questions would be evaluated.

1. It is possible to introduce colours into DNA by

A. FISH

B. Microaaray

C. Nick translation

D. SNP

2. The protein that provides the body structure and protection to our bones is

A. collagen.

B. hemoglobin.

C. actin

D. myosin

3. Restriction enzymes were discovered by

A. W. Arber, H. Smith and D. Nathans

B. Paul Berg and Herbert Boyer

C. Annie Chang and Stanley Cohen

D. Kerry Mullis

4. Foreign DNA is directly introduced in to the recipient cell using a fine micro-syringe to transform it in the following technique

A. Electroporation

B. Microinjection

C. Biolistics

D. Transfection

5. Which feature of the vectors provides flexibility in the choice of restriction enzymes?

A. MCS

B. Ori

C. Unique restriction enzyme recognition site

D. Size

6. Interferon β is used for the treatment of

A. Hepatitis C

B. Hepatitis B

C. Multiple Sclerosis

D. Chronic Granulomatous disease

7. In-situ activation of chymotrypsin takes place in the

A. jejunum.

B. duodenum.

C. ileum.

D. pancreas.

8. The enzymatic activity of subtilisin is contributed by

A. Ser 221, His 64 and Asp 32

B. Ser 32, His 221 and Asp 64

C. Ser 221, His 32 and Asp 64

D. Ser 32, His 64 and Asp 221

9. The most common type of restriction enzymes used in recombinant DNA technology are

A. Type I restriction enzymes

B. Type II restriction enzymes

C. Type III restriction enzymes

D. Type IV restriction enzymes

10. After n cycles, the number of DNA copies produced are

A. n2

B. 2n

C. nx2

D. n÷2

11 Cosmids have the cos site of

A. BAC

B. YAC

C. Plasmid

D. Lambda

12. Following enzyme prevents self ligation

A. DNA ligase

B. Eco RI

C. DNA polymerase

D. Alkaline Phosphatase

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