Biotechnology and its Applications MCQ Questions for Class 12 Biology Chapter 12 with Answers

Find here the NCERT chapter-wise Multiple Choice Questions from Class 12 Biology book Chapter 12 Biotechnology and its Applications with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Biotechnology and its Applications. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.


NCERT MCQ Chapters for Class 12 Biology

Q1. The site of production of ADA in the body is

(i) erythrocytes
(ii) lymphocytes
(iii) blood plasma
(iv) osteocytes.

(ii) lymphocytes


Q2. Which of the following is an effect of waste accumulation?

(i) Urbanisation
(ii) Over population
(iii) Health problems
(iv) Industrialisation

(iii) Health problems


Q3. A probe which is a molecule used to locate specific sequences in a mixture of DNA or RNA molecules could be:

(i) A single-stranded RNA
(ii) A single-stranded DNA
(iii) Either RNA or DNA
(iv) Can be ss DNA but not ss RNA.

(iii) Either RNA or DNA


Q4. The Ti plasmid used for producing transgenic plants is found in

(i) Azotobacter
(ii) Rhizobium
(iii) Azospirillum
(iv) Agrobacterium

(iv) Agrobacterium


Q5. The Ti plasmid used for producing transgenic plants is found in

(i) Azotobacter
(ii) Rhizobium
(iii) Azospirillum
(iv) Agrobacterium

(iv) Agrobacterium


Q6. Which of the following elements is responsible for Minamata disease?

(i) Pb
(ii) Cd
(iii) Fe
(iv) Hg

(iv) Hg


Q7. a-1 antitrypsin as:

(i) An antacid
(ii) An enzyme
(iii) Used to treat arthritis
(iv) Used to treat emphysema.

(iv) Used to treat emphysema.


Q8. Night blindness can be prevented by use of

(i) golden rice
(ii) transgenic tomato
(iii) transgenic maize
(iv) Bt brinjal.

(i) golden rice


Q9. GEAC stands for

(i) Genome Engineering Action Committee
(ii) Ground Environment Action Committee
(iii) Genetic Engineering Approval Committee
(iv) Genetic and Environment Approval Committee.

(iii) Genetic Engineering Approval Committee


Q10. Photochemical smog is caused by a light-mediated reaction between

(i) SO2 and O3
(ii) SO2 and unburnt hydrocarbons
(iii) NO2 and unsaturated hydrocarbons
(iv) NO2 and O3

(iii) NO2 and unsaturated hydrocarbons


Q11. C-peptide of human insulin is:

(i) A part of mature insulin molecule
(ii) Responsible for formation of disulphide bridges
(iii) Removed during maturation of pro-insulin to insulin
(iv) Responsible for its biological activity.

(iii) Removed during maturation of pro-insulin to insulin


Q12. Which among the following is based on antigen-antibody interaction?

(i) PCR
(ii) Electrophoresis
(iii) ELISA
(iv) All of these.

(iii) ELISA


Q13. Which of the following is not a benefit of transgenic animals ?

(i) Investigation of new treatments for diseases
(ii) Early detection of diseases
(iii) Testing the safety of vaccines
(iv) To produce useful biological products

(ii) Early detection of diseases


Q14. High value of BOD (Biochemical Oxygen Demand) indicates that :

(i) Water is highly polluted
(ii) Water is less polluted
(iii) Consumption of organic matter in the water is higher by the microbes
(iv) Water is pure

(i) Water is highly polluted


Q15. Bt cotton is not:

(i) A GM plant
(ii) Insect resistant
(iii) a bacterial gene expression system
(iv) Resistant to all pesticides.

(iii) a bacterial gene expression system


Q16. In RNAi, genes are silenced using

(i) ss DNA
(ii) ds DNA
(iii) ds RNA
(iv) ss RNA

(iii) ds RNA


Q17. A protoxin is

(i) a primitive toxin
(ii) a denatured toxin
(iii) toxin produced by protozoa
(iv) inactive toxin.

(iv) inactive toxin.


Q18. Large-scale disposal of solid waste in low areas of the ground and then covering it with earth is called

(i) Deep well injection
(ii) Landfill
(iii) Pyrolysis
(iv) Incineration

(ii) Landfill


Q19. Choose the correct option regarding Retrovirus.

(i) An RNA virus that can synthesise DNA during infection
(ii) A DNA virus that can synthesise RNA during infection
(iii) An ssDNA virus
(iv) AdsRNA virus.

(i) An RNA virus that can synthesise DNA during infection


Q20. Silencing of a gene could be achieved through the use of

(i) short interfering RNA (RNAi)
(ii) antisense RNA
(iii) by both
(iv) none of the above.

(iii) by both


Q21. The trigger for activation of toxin of Bacillus thuringiensis is

(i) acidic pH of stomach
(ii) high temperature
(iii) alkaline pH of gut
(iv) mechanical action in the insect gut.

(iii) alkaline pH of gut


Q22. A gas produced by paddy fields and involved in global warming is

(i) Carbon dioxide
(ii) Methane
(iii) Sulphur dioxide gas
(iv) Chlorine

(ii) Methane


Q23. The site of production of ADA in the body is:

(i) Bone marrow
(ii) Lymphocytes
(iii) Blood plasma
(iv) Monocytes.

(i) Bone marrow


Q24. In RNAi, genes are silenced using

(i) ssDNA
(ii) dsDNA
(iii) dsRNA
(iv) ssRNA.

(iii) dsRNA


Q25. Joint Forest Management Concept was introduced in India during

(i) 1960s
(ii) 1970s
(iii) 1980s
(iv) 1990s

(iii) 1980s


Q26. Pathophysiology is the:

(i) Study of physiology of pathogen
(ii) Study of normal physiology of host
(iii) Study of altered physiology of host
(iv) None of the above.

(iii) Study of altered physiology of host


Q27. Goldlen rice is yellow in colour due to the presence of 15.

(i) riboflavins
(ii) β – carotene
(iii) vitamin B1
(iv) complex genetic material.

(ii) β – carotene


Q28. Which of the following does not cause desertification?

(i) Deforestation
(ii) Restricted grazing
(iii) Poor irrigation practices
(iv) Over cultivation

(ii) Restricted grazing


Q29. The first clinical gene therapy was done for the treatment of:

(i) AIDS
(ii) Cancer
(iii) Cystic fibrosis
(iv) SCID.

(iv) SCID.


Q30. What causes the inactive form of Bt toxin i.e., protoxin to get converted into its active form in the body of an insect ?

(i) Temperature of the gut
(ii) Enzymes present in the saliva
(iii) Alkaline pH of the gut

(iv) There is no specific reason.

(iii) Alkaline pH of the gut


Q31. In normal adults, the enzyme which catalyses conversion of MHb into Hb is:

(i) MHb protease
(ii) MHb oxidase
(iii) MHb lipase
(iv) MHb reductase

(iv) MHb reductase


Q32. The first clinical gene therapy was done for the treatment of

(i) AIDS
(ii) cancer
(iii) cystic fibrosis
(iv) SCID (Severe Combined Immuno Deficiency resultng form deficiency of ADA).

(iv) SCID (Severe Combined Immuno Deficiency resultng form deficiency of ADA).


Q33. All are biofuels except:

(i) ethanol
(ii) biopetrol
(iii) biodiesel
(iv) marsh gas

(ii) biopetrol


Q34. Rules of conduct that may be used to regulate our activities in relation to the biological world is called

(i) bioethics
(ii) biowar
(iii) biopatent
(iv) biopiracy.

(i) bioethics


Q35. Which of the following will be able to cope with greenhouse effect?

(i) Hibernators
(ii) Homeotherms
(iii) Poikilotherms
(iv) Stenotherms

(ii) Homeotherms


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