Q11
Which immunoglobulin constitutes the largest percentage in human milk?
Correct Answer
Option B
Solution
(b) Colostrum/milk is rich in IgA, providing mucosal immunity to the infant.
Human Health and Disease
Q12
Antivenom injection contains preformed antibodies while polio drops contain
Correct Answer
Option D
Solution
(d) Oral Polio Vaccine (OPV) contains live attenuated poliovirus strains.
Q13
In higher vertebrates, if the immune system attacks self-cells due to genetic abnormality, it leads to
Correct Answer
Option C
Solution
(c) Autoimmune disease results when immune system attacks the body's own cells.
Q14
MALT constitutes about what percent of the lymphoid tissue in human body?
Correct Answer
Option D
Solution
(d) MALT (Mucosa Associated Lymphoid Tissue) constitutes about 50% of the lymphoid tissue in human body.
Q15
Which of the following diseases is due to an allergic reaction?
Correct Answer
Option C
Solution
(c) Hay fever is an allergic disease caused by sensitivity to fungal spores or pollen.
Q16
Interferons are
Correct Answer
Option A
Solution
(a) Interferons are antiviral proteins produced by virus-infected cells.
Q17
If a certain person shows production of interferons in his body, the chances are that he has an infection of
Correct Answer
Option B
Solution
(b) Interferons are produced in response to viral infections; measles is a viral disease.
Q18
During blood typing, agglutination indicates that the
Correct Answer
Option A
Solution
(a) Agglutination occurs when antibodies bind to antigens on RBC surface.
Q19
Widal test is performed to confirm
Correct Answer
Option A
Solution
(a) Widal test detects antibodies against Salmonella typhi, confirming typhoid.
Q20
Malignant malaria is caused by
Correct Answer
Option C
Solution
(c) Plasmodium falciparum causes malignant tertian malaria, the most severe form.
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