Biology and Human Welfare

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Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body? Answer: 2. Innate Immunity Key idea: Innate immunity is present from birth and is non-specific. Acquired immunity is pathogen-specific and d... Immunology basics and vaccines 1 answer
Neoplastic characteristics of cells refer to :A. A mass of proliferating cellB. Rapid growth of cellsC. Invasion and damage to the surrounding tissueD. Those confined to original locationChoose the correct answer from the options given below: Answer: 2. A, B, C only Key idea: Neoplastic cells proliferate as a mass, grow rapidly and invade neighbouring tissue. A, B and C are correc... Cancer 1 answer
Identify the statement that is NOT correct. Answer: 3. Antigen binding site is located at C-terminal region of antibody molecules. Key idea: An antibody is Y-shaped, made of 2 heavy an... Immunology basics and vaccines 1 answer
After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s) / tissue(s) like:A. thymus B. bone marrow C. spleen D. lymph nodes E. Peyer's patchesChoose the correct answer from the… Answer: 4. C, D, E only Key idea: Primary lymphoid organs are thymus and bone marrow, where lymphocytes mature. Secondary lymphoid organs ar... Immunology basics and vaccines 1 answer
Which are correct:A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.B. Chemotherapeutics drugs are used to kill non-cancerous cells.C. α-interferon activate the cancer patients' immune system and helps in destroy… Answer: 4. A and C only A: correct. CT and MRI detect cancers of internal organs. B: wrong. Chemotherapeutic drugs kill cancer cells, though... Cancer 1 answer
Given below are two statements :Statement I : Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced.Statement II : Both bone marrow and thymus provide micro environments for the development and maturation of… Answer: 2. Both Statement I and Statement II are correct. Key idea: primary lymphoid organs are bone marrow and thymus. Statement I is corre... Immunology basics and vaccines 1 answer
Which of the following are Autoimmune disorders?A. Myasthenia gravisB. Rheumatoid arthritisC. GoutD. Muscular dystrophyE. Systemic Lupus Erythematosus (SLE)Choose the most appropriate answer from the options given below : Answer: 3. A, B & E only Key idea: in an autoimmune disease the body attacks its own tissue. Myasthenia gravis, rheumatoid arthritis and SLE... Immunology basics and vaccines 1 answer
Match List I with List II :List I:A. Common coldB. HaemozoinC. Widal testD. AllergyList II:I. PlasmodiumII. TyphoidIII. RhinovirusesIV. Dust mitesChoose the correct answer from the options given below : Answer: 4. A-III, B-I, C-II, D-IV Common cold - rhinoviruses (A-III). Haemozoin - toxic pigment released from RBCs in malaria, Plasmodium (B... Pathogens and parasites causing human diseases 1 answer
Match List I with List II :List I:A. TyphoidB. LeishmaniasisC. RingwormD. FilariasisList II:I. FungusII. NematodeIII. ProtozoaIV. BacteriaChoose the correct answer from the options given below : Answer: 3. A-IV, B-III, C-I, D-II Typhoid - bacterium Salmonella typhi (A-IV). Leishmaniasis - protozoan Leishmania (B-III). Ringworm - fung... Pathogens and parasites causing human diseases 1 answer
Match List I with List II :List I:A. CocaineB. HeroinC. MorphineD. MarijuanaList II:I. Effective sedative in surgeryII. Cannabis sativaIII. ErythroxylumIV. Papaver somniferumChoose the correct answer from the options given below : Answer: 1. A-III, B-IV, C-I, D-II Cocaine comes from Erythroxylum coca (A-III). Heroin (smack) is made from morphine, which comes from Papav... Adolescence, drug, alcohol and tobacco abuse 1 answer
Match List I with List II.List I: A. Heroin; B. Marijuana; C. Cocaine; D. MorphineList II: I. Effect on cardiovascular system; II. Slow down body function; III. Painkiller; IV. Interfere with transport of dopamineChoose the correct answer from the op… Answer: 2. A-II, B-I, C-IV, D-III Key idea: Match each drug with its effect. Heroin (smack): a depressant that slows down body functions (II... Adolescence, drug, alcohol and tobacco abuse 1 answer
In which blood corpuscles, the HIV undergoes replication and produces progeny viruses? Answer: 2. T _II cells Key idea: HIV enters macrophages and helper T-lymphocytes. Inside the helper T cells (T_H) the virus makes DNA with r... HIV and AIDS 1 answer
Match List I with List II.List I: A. Ringworm; B. Filariasis; C. Malaria; D. PneumoniaList II: I. Haemophilus influenzae; II. Trichophyton; III. Wuchereria bancrofti; IV. Plasmodium vivaxChoose the correct answer from the options given below: Answer: 2. A-II, B-III, C-IV, D-I Key idea: Match disease and causative organism. Ringworm: Trichophyton (II). Filariasis: Wuchereria bancro... Pathogens and parasites causing human diseases 1 answer
Given below are two statements :Statement I :Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as foreign bodies.Statement II :Rheumatoid arthritis is a condition where body does not attack self cells.In the lig… Answer: 4. Statement I is correct but Statement II is incorrect Key idea: In autoimmunity the body attacks its own cells; rheumatoid arthrit... Immunology basics and vaccines 1 answer
Select the incorrect statement with respect to acquired immunity. Answer: 1. Acquired immunity is non-specific type of defense present at the time of birth. Key idea: Acquired immunity is specific and devel... Immunology basics and vaccines 1 answer
Match List - I with List - II.List - I / List - II(a) Filariasis (i) Haemophilus influenzae(b) Amoebiasis (ii) Trichophyton(c) Pneumonia (iii) Wuchereria bancrofti(d) Ringworm (iv) Entamoeba histolyticaChoose the correct answer from the options given… Answer: 2. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii) Filariasis - Wuchereria bancrofti Amoebiasis - Entamoeba histolytica Pneumonia - Haemophil... Pathogens and parasites causing human diseases 1 answer
Identify the wrong statement with reference to immunity. Answer: 3. Active immunity is quick and gives full response. Key idea: Active immunity is slow; passive immunity is quick. In active immunit... Immunology basics and vaccines 1 answer
Match the following diseases with the causative organism and select the correct option.Column - I: (a) Typhoid (b) Pneumonia (c) Filariasis (d) MalariaColumn - II: (i) Wuchereria (ii) Plasmodium (iii) Salmonella (iv) Haemophilus Answer: 2. (a) (iii), (b) (iv), (c) (i), (d) (ii) Key idea: Match each disease with its pathogen. Typhoid: Salmonella (iii) Pneumonia: Haemo... Pathogens and parasites causing human diseases 1 answer
The infectious stage of Plasmodium that enters the human body is : Answer: 2. Sporozoites Key idea: Female Anopheles injects sporozoites into the human body when it bites. Sporozoites go to the liver and mul... Pathogens and parasites causing human diseases 1 answer
Which of the following immune responses is responsible for rejection of kidney graft ? Answer: 4. Cell-mediated immune response Key idea: Graft rejection is a cell-mediated response. T-lymphocytes recognise the foreign tissue a... Immunology basics and vaccines 1 answer
Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid. Answer: 4. textitSalmonella typhi / Widal test Key idea: Typhoid is caused by Salmonella typhi and diagnosed by the Widal test. Plasmodium v... Pathogens and parasites causing human diseases 1 answer
Drug called 'Heroin' is synthesized by : Answer: 2. acetylation of morphine Key idea: Heroin (diacetylmorphine, smack) is made by acetylation of morphine. Morphine is extracted from... Adolescence, drug, alcohol and tobacco abuse 1 answer
Colostrum, the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the newborn infants because it contains : Answer: 4. Immunoglobulin A Colostrum is rich in antibodies, mainly IgA, which give the newborn passive natural immunity. NK cells, monocyte... Immunology basics and vaccines 1 answer
Which part of poppy plant is used to obtain the drug "Smack" ? Answer: 3. Latex Key idea: Smack (brown sugar, heroin) is made by acetylation of morphine. Morphine is obtained from the latex of the opium... Adolescence, drug, alcohol and tobacco abuse 1 answer

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