NCERT - Health and Diseases Questions and Answers of Class 12 Biology | GkSeries

Questions
211 The function of Ig E is...
1 To mediate in allergic response
2 Activation of B-Cells
3 Protection from inhaled and ingested pathogen
4 Stimulation of complement system, passive immunity to foetus.

Answer: To mediate in allergic response
212 By what we get passive immunity ?
1 Antibody
2 Antigen
3 Antibiotic
4 Vaccination

Answer: Antibody
213 Whose number increase during allergy ?
1 Ig A
2 Ig G
3 Ig E
4 Ig M

Answer: Ig E
214 The molecule, which stimulates the immune response is...
1 Antibody
2 Mutant
3 Carcinogen
4 Antigen

Answer: Carcinogen
215 Duration of fever occured by plasmodium malarie is _______
1 Every 24 hours.
2 Every 36 hours.
3 Every 48 hours.
4 Every 72 hours.

Answer: Every 72 hours.
216 Which of the following is not a lymphoid tissue?
1 Spleen
2 Tonsils
3 Appendix
4 Thymus

Answer: Appendix
217 A person with sickle cell anemia is
1 more prone to malaria
2 more prone to typhoid
3 less prone to malaria
4 less prone to typhoid

Answer: less prone to malaria
218 AIDS is caused by HIV. Among the following, which one is not a mode of transmission of HIV?
1 Transfusion of contaminated blood
2 Sharing the infected needles
3 Shaking hands with infected persons
4 Sexual contact with infected persons

Answer: Shaking hands with infected persons
219 In malignant tumors, the cells proliferate, grow rapidly and move to other parts of the body to form new tumors. This stage of disease is called:
1 metagenesis
2 metastasis
3 teratogenesis
4 mitosis

Answer: metastasis
220 The disease chikunguniya is transmitted by:
1 house flies
2 Aedes mosquitoes
3 cockroach
4 female Anopheles

Answer: Aedes mosquitoes
211 The chemical test that is used for diagnosis of typhoid is:
1 ELISA-Test
2 ESR – Test
3 PCR – Test
4 Widal-Test

Answer: Widal-Test
222 The term ‘Health’ is defined in many ways. The most accurate definition of the health would be
1 health is the state of body and mind in a balanced condition
2 health is the reflection of a smiling face
3 health is a state of complete physical, mental and social well-being
4 health is the symbol of economic prosperity.

Answer: health is a state of complete physical, mental and social well-being
223 The substance produced by a cell in viral infection that can protect other cells from further infection is:
1 serotonin
2 colostrum
3 interferon
4 histamine

Answer: interferon
224 Tobacco consumption is known to stimulate secretion of adrenaline and nor- adrenaline. The component causing this could be:
1 Nicotine
2 Tannic acid
3 Curaimin
4 Catechin

Answer: Nicotine
225 Haemozoin is:
1 a precursor of hemoglobin
2 a toxin from Streptococcus
3 a toxin from Plasmodium species
4 a toxin from Haemophilus species

Answer: a toxin from Plasmodium species

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