CBSE Academic Class XII Biotechnology Sample Question Paper 2022-23
Name of the Board : Central Board of Secondary Education (CBSE)
Class : XII STD
Document Type : Sample Question Paper
Subject : Biotechnology
Year : 2022-23
Website : https://cbseacademic.nic.in/SQP_CLASSXII_2022-23.html
CBSE XII Biotechnology Sample Question Paper
CBSE Students can download the Biotechnology Sample Question Paper for the year 2022-23 from the website of CBSE Academic.
Related / Similar Question Paper : CBSE Academic Class XII Biology Sample Question Paper 2022-23
CBSE Biotechnology Sample Question Paper
SECTION A
1. Male sterility is widely used in crops such as maize, sunflower for hybrid production. Male sterile plants are created by introducing a gene encoding-
(a) Barnase protein
(b) TA29
(c) Barstar protein
(d) Coat protein
2. Body builders prefer to drink buffalo milk to build muscle mass. Determine the reason for this?
(a) Easier to digest
(b) Lower fat content
(c) Higher calcium and phosphorus content
(d) Balanced calorie source
3. An industrially important secondary metabolite which is used as a red pigment in
lipstics and dye for silk is obtained from-
(a) Datura stramonium
(b) Lithospermum erythrorhizon
(c) Digitalis lanata
(d) Coptis japonica
4. Proteome of a given cell is dynamic because :
(a) In response to Internal and external changes the biochemical machinery of the cell could be changed.
(b) In response to Internal and external changes the biochemical machinery of the cell could not be changed.
(c) No direct relationship exists between Internal and external changes in the biochemical machinery of the cell.
(d) Indirect relationship exists between Internal and external in changes the biochemical machinery of the cell.
5. Artificial seeds are produced by-
(a) Encapsulating somatic embryos in calcium alginate beads
(b) Desiccating the somatic embryos with or without coating
(c) Hydrating the somatic embryos
(d) Hydrating the zygotic embryos.
6. Being a researcher, you want to improve the deficiency of certain amino acids in cereals and legumes. Choose the technique out of the following which will be the best to achieve your goal:
(a) Plant tissue culture
(b) Adding fertilizers to soil
(c) Protein engineering
(d) Vegetative Propagation
7. Foreign DNA is directly introduced into the recipient cell using a fine micro-syringe to transform it. The probable advantage this provides could be:
a) No specialised equipment required
b) No damage to cells
c) Low transduction rate
d) Precision of delivery
8. A piece of young hypocotyl was cultured in MS medium in a plant tissue culture lab. This is a type of-
(a) Organ culture
(b) Callus culture
(c) Explant culture
(d) Mass cell culture
9. Molecular Biologists prefer to use artificial vectors with MCS. List a benefit for this choice.
(a) Flexibility in choice of insert size
(b) Flexibility in choice of vector size
(c) Flexibility in choice of host organism
(d) Flexibility in choice of restriction enzyme
10. Native enzyme Subtilisin is inactivated by bleach, in detergents because of oxidation of methionine at position 222. Choose a strategy that will help overcome this problem:
(a) Use Pepsin instead of Subtilisin
(b) Eliminate use of bleach
(c) Substitute another amino acid at position 222
(d) Use Amylase instead of Subtilisin
Download CBSE XII Biotechnology Question Paper
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https://www.pdfquestion.in/uploads/pdf2022/41011.pdf