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

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NCERT MCQ Chapters for Class 12 Biology


Q1. Which of the following will be able to cope with greenhouse effect?

(A) Hibernators
(B) Homeotherms
(C) Poikilotherms
(D) Stenotherms


(B) Homeotherms


Q2. The site of production of ADA in the body is

(A) erythrocytes
(B) lymphocytes
(C) blood plasma
(D) osteocytes.


(B) lymphocytes


Q3. Rules of conduct that may be used to regulate our activities in relation to the biological world is called

(A) bioethics
(B) biowar
(C) biopatent
(D) biopiracy.


(A) bioethics


Q4. Which of the following is an effect of waste accumulation?

(A) Urbanisation
(B) Over population
(C) Health problems
(D) Industrialisation


(C) Health problems


Q5. All are biofuels except:

(A) ethanol
(B) biopetrol
(C) biodiesel
(D) marsh gas


(B) biopetrol


Q6. A probe which is a molecule used to locate specific sequences in a mixture of DNA or RNA molecules could be:

(A) A single-stranded RNA
(B) A single-stranded DNA
(C) Either RNA or DNA
(D) Can be ss DNA but not ss RNA.


(C) Either RNA or DNA


Q7. The first clinical gene therapy was done for the treatment of

(A) AIDS
(B) cancer
(C) cystic fibrosis
(D) SCID (Severe Combined Immuno Deficiency resultng form deficiency of ADA).


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


Q8. The Ti plasmid used for producing transgenic plants is found in

(A) Azotobacter
(B) Rhizobium
(C) Azospirillum
(D) Agrobacterium


(D) Agrobacterium


Q9. In normal adults, the enzyme which catalyses conversion of MHb into Hb is:

(A) MHb protease
(B) MHb oxidase
(C) MHb lipase
(D) MHb reductase


(D) MHb reductase


Q10. The Ti plasmid used for producing transgenic plants is found in

(A) Azotobacter
(B) Rhizobium
(C) Azospirillum
(D) Agrobacterium


(D) Agrobacterium


Q11. What causes the inactive form of Bt toxin i.e., protoxin to get converted into its active form in the body of an insect ?

(A) Temperature of the gut
(B) Enzymes present in the saliva
(C) Alkaline pH of the gut
(D) There is no specific reason.


(C) Alkaline pH of the gut


Q12. Which of the following elements is responsible for Minamata disease?

(A) Pb
(B) Cd
(C) Fe
(D) Hg


(D) Hg


Q13. The first clinical gene therapy was done for the treatment of:

(A) AIDS
(B) Cancer
(C) Cystic fibrosis
(D) SCID.


(D) SCID.


Q14. a-1 antitrypsin as:

(A) An antacid
(B) An enzyme
(C) Used to treat arthritis
(D) Used to treat emphysema.


(D) Used to treat emphysema.


Q15. Which of the following does not cause desertification?

(A) Deforestation
(B) Restricted grazing
(C) Poor irrigation practices
(D) Over cultivation


(B) Restricted grazing


Q16. Night blindness can be prevented by use of

(A) golden rice
(B) transgenic tomato
(C) transgenic maize
(D) Bt brinjal.


(A) golden rice


Q17. Goldlen rice is yellow in colour due to the presence of 15.

(A) riboflavins
(B) β – carotene
(C) vitamin B1
(D) complex genetic material.


(B) β – carotene


Q18. GEAC stands for

(A) Genome Engineering Action Committee
(B) Ground Environment Action Committee
(C) Genetic Engineering Approval Committee
(D) Genetic and Environment Approval Committee.


(C) Genetic Engineering Approval Committee


Q19. Pathophysiology is the:

(A) Study of physiology of pathogen
(B) Study of normal physiology of host
(C) Study of altered physiology of host
(D) None of the above.


(C) Study of altered physiology of host


Q20. Photochemical smog is caused by a light-mediated reaction between

(A) SO2 and O3
(B) SO2 and unburnt hydrocarbons
(C) NO2 and unsaturated hydrocarbons
(D) NO2 and O3


(C) NO2 and unsaturated hydrocarbons


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