CBSE - Health and Diseases Questions and Answers of Class 12 Biology

91 Widal test is used for diagnosis of

[1] Typhoid

[2] Cancer

[3] AIDS

[4] Malaria

Answer: Typhoid

92 Leprosy is ______ type of disease

[1] Non-contagious

[2] contagious

[3] Allergic

[4] Hormonal

Answer: contagious

93 Which one of the following is a degenerative disease?

[1] Cataract

[2] Kwashiorkar

[3] Cretinism

[4] Marasmus

Answer: Cataract

94 Typhus fever is caused by ______.

[1] Fungi

[2] Bacteria

[3] Virus

[4] Rickettsia

Answer: Rickettsia

95 AIDS causing HIV principally infects

[1] All lymphocytes

[2] Activator B-cells

[3] T4 lymphocytes

[4] Cytotoxic T-cells

Answer: T4 lymphocytes

96 A person was found to HIV positive by ELISA. The test that affirms it is

[1] Southern blot

[2] Northern blot

[3] Western blot

[4] All the above

Answer: Western blot

97 Breast cancer is the example of ______ disease.

[1] Deficiency

[2] Hormonal

[3] Allergic

[4] Malignant

Answer: Malignant

98 HIV is retrovirus as its genetic information is contained in

[1] DNA

[2] DNA instead of RNA

[3] RNA instead of DNA

[4] Protein

Answer: RNA instead of DNA

99 Malaria is caused by _____.

[1] Ascaris

[2] Plasmodium

[3] Entamoeba

[4] Trypanosoma

Answer: Plasmodium

100 Disease existing at or before birth is

[1] Congenital

[2] Communicable

[3] Noncommunicable

[4] None of these

Answer: Congenital

101 Cancerous cells are killed by radiations because they are

[1] Dividing rapidly

[2] Deprived of oxigen

[3] Starved

[4] Mutating fast

Answer: Dividing rapidly

102 Cancer of cervix is caused by

[1] Human Papilloma virus

[2] Pep pills

[3] Epstein Barr Virus

[4] Fetty diet

Answer: Human Papilloma virus

103 Kwashiorkor and beri-beri are

[1] Communicable diseases

[2] Infectious diseases

[3] Deficiency diseases

[4] None of the above

Answer: Deficiency diseases

104 Sarcoma is cancer of

[1] Epithelial tissue

[2] Mesodermal tissue

[3] Blood

[4] Endodermal tissues

Answer: Mesodermal tissue

105 Which of the followings is a structural changes in cancer cells?

[1] Apoplasia

[2] Metastasis

[3] Both (1) and (2)

[4] Neithr (1) nor (2)

Answer: Apoplasia

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