CBSE Class 12 Biology Biotechnology and Its Applications MCQs Set A

Question :  Bt cotton is not
a) Resistant to all pesticides
b) A bacterial gene expressing system
c) Insect resistant
d) A GM plant

Answer :  A

Question :  C-peptide of human insulin is
a) Removed during maturation of pro-insulin to insulin
b) Responsible for its biological activity
c) Responsible for formation of disulphide bridges
d) A part of mature insulin molecule

Answer :  A

Question :  GEAC stands for
a) Genetic Engineering Approval Committee
b) Genetic and Environment Approval committee
c) Ground Environment Action Committee
d) Genome Engineering Action Committee

Answer :  A

Question : α - 1 antitrypsin is :
a) Used to treat emphysema
b) Used to treat arthritis
c) An enzyme
d) An antacid

Answer :  A

Question :  A probe which is a molecule used to locate specific sequences in a mixture of DNA or RNA molecules could be
a) Either RNA or DNA
b) Can be ss DNA but not ss RNA
c) A single stranded DNA
d) A single stranded RNA

Answer :  A  

Question :  ———– is used as a vector for cloning into higher organisms
a) Retrovirus
b) Baculovirus
c) Salmonella typhimurium
d) All of these

Answer :  A

Question :  Which bacterium is used in the production of insulin by genetic engineering?
a) Escherichia
b) Mycobacterium
c) Rhizobium
d) Saccharomyces

Answer :  A

Question :  Restriction endonuclease is employed for cutting
a) Double strand DNA
b) RNA fragment
c) mRNA
d) A single strand DNA

Answer :  A

Question :  Production of human protein in bacteria by genetic engineering is possible because
a) Genetic code is universal
b) Bacterial cell can undertake RNA splicing
c) Mechanism of gene regulation is identical in humn and bacteria
d) None of these

Answer :  A

Question :  Some of the characteristics of Bt cotton are
a) High yield and production of toxic proteins ceystals which kill dipteran pests
b) High yield and resistance to bollworms
c) High yield and resistance to bollworms
d) All of these

Answer :  A

Question :  Choose the correct option regarding Retrovirus
a) An RNA virus that can synthesise DNA during infection
b) A DNA virus that can synthesise RNA during infection
c) A ssDNA virus
d) A dsRNA virus

Answer :  A

Question :  The site of production of ADA in the body is
a) Lymphocytes
b) Bone marrow
c) Blood plasma
d) Monocytes

Answer :  A

Question :  A protoxin is:
a) Inactive toxin
b) Toxin produced by protozoa
c) A denatured toxin
d) A primitive toxin

Answer :  A

Question :  Pathophysiology is the
a) Study of altered physiology of host
b) None of the above
c) Study of normal physiology of host
d) Study of physiology of pathogen

Answer :  A

Question :  The trigger for activation of toxin of Bacillus thuringiensis is
a) Alkaline pH of gut
b) Mechanical action in the insect gut
c) High temperature
d) Acidic pH of stomach

Answer :  A

Question :  Clot buster obtained from Streptococcus and modified by genetic engineering is
a) Streptokinase
b) Penicillin
c) Cyclosporin A
d) Statins

Answer :  A

Question :  Maturation of proinsulin into insulin takes place after
a) Maturation of proinsulin into insulin takes place after
b) Joining of c-peptide
c) Addition of disulphide bridge
d) Joining of c-peptide

Answer :  A

Question :  Restriction enzymes are also called
a) Molecular scissors
b) Carriers
c) Vectors
d) Molecular makers

Answer :  A

Question :  RNA interference helps in
a) Cell defence
b) Cell differentiation
c) Micropropagation
d) Cell proliferation

Answer :  A

Question :  Which of the following is the quality of improved transgenic basmati rice?
a) Gives high yield and is rich in vitamin A
b) Does not require chemical fertilizers and growth hormones
c) Resistant to insects and diseases
d) Resistant to insects and diseases

Answer :  A