Class 12 Biology MCQs Chapter – 8
41. Which of the following is a retro virus ?
( A ) Human Immuno Deficiency virus
( B ) Hepatitis virus
( C ) Micro virus influenzii
( D ) All of these
Answer-( A )
42. Which of the following disease is generated by allergens?
( A ) Skin cancer
( B ) Hay fever
( C ) Enteric fever
( D ) Goitre
Answer-( B )
43. Mast cell secretes :
( A ) Prostagland in
( B ) Glycoprotein
( C ) Histamine
( D ) Hirudin
Answer-( C )
44. AIDS is widely diagnosed by:
( A ) Widal Test
( B ) ELISA
( C ) PCR
( D ) Chromatography
Answer-( B )
45. Which is formed by Acetylation of Morphine ?
( A ) Heroin
( B ) Cocaine
( C ) Nicotine
( D ) Alkaloids
Answer-( A )
46.Cocaine is obtained from:
( A ) Erythroxylon coca
( B ) Paparver sominiferum
( C ) Atropa belladona
( D ) Datura stramonium
Answer-( A )
47. Hepatitis B is transmitted through
( A ) Sneezing
( B ) Coughing
( C ) Blood transfusion
( D )female mosquito
Answer-( C )
48. Level of which hormones get elevated by the in take of nicotine ?
( A ) FSH, LH
( B ) Oxytocin, prolactin
( C ) Adrenaline, Nor-adrenaline
( D ) FSH & Estrogen
Answer-( C )
49. Which one of the following is an opiate narcotic ?
( A ) Barbiturates
( B ) Morphine
( C ) Amphetamines
( D ) LSD
Answer-( B )
50. Which causes whooping cough?
( A ) Legionella sps.
( B ) Bordetella pertusis
( C ) Haemophilus
( D ) Mycobacterium
Answer-( B )
51. Which of the following disease is generated by allergens?
( A ) Skin
( B ) Hay fever
( C ) Enteric fever
( D ) Goitre
Answer-( B )
52. HIV destroys which cell in AIDS disease ?
( A ) B-cell
( B ) C-cell
( C ) T⁴-lymphocyte
( D ) Both (A) and (B)
Answer-( C )
53. Cancer is caused by
( A ) Bacteria
( B ) Oncogenes
( C ) Both (A) and (B)
( D ) None of these
Answer-( B )
54. Which one is viral disease ?
( A ) Flu
( B ) Polio
( C ) AIDS
( D ) All of these
Answer-( D )
55. Which in the following is viral disease?
( A ) Hepatitis
( B ) Polio
( C ) Aids
( D ) All
Answer-( D )
56. Widal Test is for the diagnosis of which disease in the following ?
( A ) Typhoid
( B ) T.B.
( C ) Cancer
( D ) Leprosy
Answer-( A )
57. Vaccine for Rabies was first produced by :
( A ) Edward Jenner
( B ) Robert Kotch
( C ) Louis Pasteur
( D ) S.L.Miller
Answer-( C )
58. Kotch postulate are not applicable to :
( A ) Diptheria
( B ) Leprosy
( C ) T.B.
( D ) Cholera
Answer-( B )
59. Hey fever is caused by :
( A ) virus
( B ) loss of vitamin
( C ) alergy
( D ) none
Answer-( C )
60. Cell mediated immunity is due to :
( A ) B-lymphocytes
( B ) T-lymphocytes
( C ) Both
( D ) Plasma cell
Answer-( B )
