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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Health and Diseases of Biology.
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
213
Whose number increase during allergy ?
[1]
Ig A
[2]
Ig G
[3]
Ig E
[4]
Ig M
214
The molecule, which stimulates the immune response is...
[1]
Antibody
[2]
Mutant
[3]
Carcinogen
[4]
Antigen
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.
216
Which of the following is not a lymphoid tissue?
[1]
Spleen
[2]
Tonsils
[3]
Appendix
[4]
Thymus
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
220
The disease chikunguniya is transmitted by:
[1]
house flies
[2]
Aedes mosquitoes
[3]
cockroach
[4]
female Anopheles
211
The chemical test that is used for diagnosis of typhoid is:
[1]
ELISA-Test
[2]
ESR – Test
[3]
PCR – Test
[4]
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
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
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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