51. The foods made from genetically modified crops required to Pass human testing because
A. they may cause allergies
B. they may alter genes
C. they may cause mutations and releasetoxins
D. all above
Answer : Option D
52. A –some bacteria produce vit. B12 , R – vitamins are obtained when they are alive
A. Both A & R true. R is explanation of A
B. Both A & R true butR is explanation of A
C. A is wrong R is true.
D. A is right R is wrong.
Answer : Option B
53. A – second generation vaccines are safer touse. , R –They are produced by genetic engineering
A. Both A & R true. R is explanation of A
B. Both A & R true butR is explanation of A
C. A is wrong R is true.
D. A is wrong R is wrong.
Answer : Option B
54. Tissue culture technique has been biotechnologically successful in production of -
55. Yeast is a good source of
56. Penicillin is obtained from -
57. A bioreactor refers to
A. Fermentation tank
B. organisms reacting to stimul
C. Nuclear reactor for biochemical reactions
D. Tank & biochemical reactions
Answer : Option D
58. Cells obtained from cancerous tumours are known as -
59. Hybridomas areemployedfor
A. synthesis of antibiotics
B. Killing cancer cells
C. synthesis of monoclonal antibodies
D. Production of somatic hybrids
Answer : Option C
60. Antibiotics inhibits the growth or destroy
A. Bacteria and fungi
B. Bacteria and viruses
C. Bacteria algae and viruses
D. Bacteria, fungi and viruses
Answer : Option D