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 Multiple Choice QuestionsMultiple Choice Questions


Protein deficiency disease is

  • eczema

  • cirrhosis

  • kwashiorkor

  • night blindness



Kwashiorkor is a protein deficiency disease. It results due to severe malnutrition or lack or protein. Symptoms include loss of appetite, changes in hair color, dehydration, lack of muscle and fat tissues, lethargy, irritability etc.


Cyclosporine is used as

  • clot buster

  • immunosupppressant

  • prophylactic for viruses

  • prophylactic for marasmus



Cyclosporine is used as immunosupressant. It is derived from a fungus and is used to prevent rejection of kidney, heart and liver transplants. It also inhibits the activity of helper T-cells.


Just as Xenopsylla is to Yersenia pestis, so is:

  • Glossina palpalis to Wuchereria bancrofti

  • Culex to Plasmodium falciparum

  • Homo sapiens to Taenia solium

  • Phlebotomus to Leishmania donovani


Phlebotomus to Leishmania donovani

Xenopsylla or rat flea transmits the pathogen Yersinia pestis, responsible for plague. Like this, the sand fly Phlebotomus transmits the protozoa Leishmania donovani which is the causative agent of Kala azar, oriental sore etc.


Which of the following is a component of cell mediated immunity?

  • B-cells

  • α- cells

  • T-cells

  • Both (a) and (c)



Cell- mediated immunity is an immune response that does not involve antibodies, but rather involves the activation of phagocytes, antigen- specific cytotoxic T- lymphocytes and the release of various cytokines in response to an antigen. CD4 cell or Helper T cells provide protection against different pathogens.


Cocaine is a stimulant, which may cause addiction. It is an alkaloid obtained from

  • Eucalyptus

  • Erythroxylon

  • Rauwolfia

  • Papaver



Cocaine is a natural alkaloid obtained from leaves of Erthyroxylon coca. Chemical formula is C17H21NO4. It is a powerful CNS stimulant. It causes lack of sleep and loss of appetite.


Adults of Wuchereria bancrofti attacks

  • excretory system

  • nervous system

  • digestive system

  • lymphatic system


lymphatic system

Wuchereria bancrofti is a dreaded human parasite. It is digenetic parasite completing its life cycle in two hosts, the final host is man harbouring the adult worm. The adult worms live coiled up in the gland and lymph vessels of man.


Which of the following is involved in allergic reaction?

  • lgM

  • IgM and lgG

  • IgA

  • lgE



IgE antibody is involved in allergic reactions. During allergy, individual's immune system over reacts to an allergen by producing antibodies called IgE.


In humans, schizont stage of Plasmodium is found inside:

  • liver cells only

  • liver, spleen and blood cells

  • RBCs and liver cells

  • RBCs only


RBCs and liver cells

The life cycle of Plasmodium in mosquito called sporogony and in man schizogony. Schizogony includes three stages of which pre-erythrocycle and exo-erythrocycle takes place in liver cells and erythrocytic schizogony takes place in RBC of blood of man which characterised by the formation of signet ring stage and schizont.


AIDS disease was first reported in

  • Russia

  • Germany

  • USA

  • France



AIDS was first reported from USA in 1981.


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 the reason is the correct explanation of the assertion

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

  • If Assertion is true statement but Reason is false

  • If both Assertion and Reason are false statements


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

Mast cells act on body's defense mechanism. When some allergens like different pollutants, smog, smoke, pollen grains etc. come in contact with mastcell, 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.