Assertion: Mast cells in the human body release excessive amounts

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 Multiple Choice QuestionsMultiple Choice Questions

121.

Refer to the given figure depicting a diseased condition in humans and name the worm causing this disease.

  • Epidermophyton jloccosum

  • Ascaris lumbricoides

  • Wuchereria bancrofti

  • Entamocba histolytica


122.

Which of the following antibiotics is not correctly matched with the source from which it is obtained

  • Penicillin                   Penicillium chrysogenum

  • Bacitracin                Bacillus licheniformis

  • Griseofulvin             Penicillium griseofulvurm

  • Streptomycin          Bacillus griseus


123.

AIDS disease was first reported in

  • Russia

  • Germany

  • USA

  • France


124.

Refer to the given figure and choose the organism not related to the condition shown here.

  • Microsporum

  • Trichophyton

  • W. malayi

  • Epidermophyton


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125.

Select the incorrect match.

  • Citric acid - Aspergillus niger

  • Streptokinase - Streptococcus

  • Butyric acid - Clostridium acetobutylicum

  • Cyclosporin A - Monascus purpureus


126.

Match the following and select the correct option.

        Column-I          Column- II
A. Emphysema        (i) Increase in the concentration of non-biodegradable                                                                    substances in food chains

B. ADA deficiency    (ii) α-1 antitrypsin

C. Eutrophication    (iii) Bone marrow transplantation

D. Biomagnification (iv) Nutrient enrichment of a water body

  • A- (iii), B - (ii), C- (iv), D - (i)

  • A-(ii), B- (iii),C- (iv), D-(i)

  • A-(ii), B - (iv),C - (i), D - (iii)

  • A- (iv), B- (ii), C- (iii), D-(i)


127.

Which of the following pathogens is not transmitted by a vector

  • Salmonella typhi

  • Alpha virus

  • Plasmodium

  • Wuchereria bancrofti


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128.

Assertion: Mast cells in the human body release excessive amounts of inflammatory chemicals which cause allergic reactions.

Reason: Allergens in the environment on reaching human body stimulate mast cells in certain individuals.

  • If both assertion and reason are true and reason is the correct explanation of assertion. 

  • If both assertion and reason are true but reason is not the correct explanation of assertion. 

  • If assertion is true but reason is false. 

  • If both assertion and reason are false.


A.

If both assertion and reason are true and reason is the correct explanation of assertion. 

Mast cells act on body's defense mechanism. When some allergens like different pollutants, smog, smoke, pollen grains etc. come in contact with mast cells, they stimulate the mast cells. The allergic reaction is triggered by cross linking of IgE molecules on the surface of mast cells by allergen and ultimately mast cells release excessive amounts of inflammatory chemicals which cause allergic reactions.


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129.

Assertion: Filarial worm is transmitted to humans by Culex mosquito.

Reason: Culex prefers to breed in fresh water.

  • If both assertion and reason are true and reason is the correct explanation of assertion. 

  • If both assertion and reason are true but reason is not the correct explanation of assertion. 

  • If assertion is true but reason is false. 

  • If both assertion and reason are false.


130.

Assertion : IgM is a type of immunoglobulin which cannot cross the placenta.

Reason : IgM is pentamer immunoglobulin, joined by J-chain

  • If both assertion and reason are true and reason is the correct explanation of assertion

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false.

  • If both assertion and reason are false


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