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Q.1
Marijuana is obtained from … .. [ JKCMEE 2011]
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a) Areca catechu
0%
b) Thea sinensis
0%
c) Cannabis indica
0%
d) Cannabis sativa
Explanation
Marijuana, chemical is found in resin produced by the leaves and buds primarily of the female Cannabis sativa plant Answer : (d)
Q.2
How many variable segments are present in the basic structure of antibody molecule .. [ Odisha 2010]
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a) one
0%
b) Two
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c) Three
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d) Four
Explanation
The variable region includes the ends of the light and heavy chains, thus have four region Answer : (b)
Q.3
Blood cancer is … [ CBSE 1995]
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a) Leukemia
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b) Thrombosis
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c) Haemophilia
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d) Hemolysis
Explanation
Leukemia is cancer of the body's blood-forming tissues, including the bone marrow and the lymphatic system. Answer : (a)
Q.4
Treatment of cancer can be made by … [ HPPMT 2011]
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a) Radiation therapy
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b) Surgery
0%
c) Immunotherapy
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d) All the above
Explanation
Treatment of cancer can be made by surgery, chemotherapy and/or radiation therapy. Immunotherapy, targeted therapy, or hormone therapy. Answer : (d)
Q.5
Antibody which mediates allergic response is …[ AMU 2010]
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a) IgA
0%
b) IgD
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c) IgE
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d) IgM
Explanation
Immunoglobulin E (IgE) are antibodies produced by the immune system. Immune system overreacts to an allergen by producing antibodies called Immunoglobulin E (IgE). These antibodies travel to cells that release chemicals, causing an allergic reaction. Answer : (c)
Q.6
The agent that tends to produce cancer is known as ..[ AMU 2011]
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a) Oncogene
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b) Carcinoma
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c) Carcinogen
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d) Metastasis
Explanation
carcinogen a substance capable of causing cancer in living tissue. Answer : (c)
Q.7
Which is not a component of nonspecific defence …
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a) Mucous membrane
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b) Phagocytosis
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c) Lysozyme
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d) Killer T-cells
Explanation
Nonspecific defenses include physical and chemical barriers, the inflammatory response, and interferons. Killer T-cells recognise their specific antigen (such as fragments of viruses) that are present on the surface of all nucleated cells. T cells kill their target cells, primarily by releasing cytotoxic granules into the cell to be killed. Answer : (d)
Q.8
Which is not correctly matched
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a) Dengue Fever – Arbovirus
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b) Plague - Yersinia pestis
0%
c) Sleeping Sickness - Trypanosoma gambiense
0%
d) Syphilis - Trichuris trichiura
Explanation
The cause of syphilis is a bacterium called Treponema pallidum. Thus option (d) is not correct Answer : (d)
Q.9
Action of lysozyme is … [ DPMT 2007]
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a) Morphological
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b) Physiological
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c) Anatomical
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d) None of the above
Explanation
Lysozyme is a naturally occurring enzyme found in bodily secretions such as tears, saliva, and milk. It functions as an antimicrobial agent by cleaving the peptidoglycan component of bacterial cell walls, which leads to cell death. Thus correct answer is Physiological Answer : (b)
Q.10
Causal organism of dengue is … [ BHU 2001]
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a) Arbovirus
0%
b) Wuchereria
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c) Anopheles
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d) Culex
Explanation
Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Arbovirus is any of a group of viruses which are transmitted by mosquitoes, ticks, or other arthropods. They include the dengue virus. Answer : (a)
Q.11
One of the following is used for treatment of thyroid cancer … [ CBSE 2002]
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a) U-238
0%
b) Ra-224
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c) C-14
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d) I-131
Explanation
Thyroid gland absorbs nearly all of the iodine in body. Because of this, radioactive iodine (RAI, also called I-131) can be used to treat thyroid cancer. Answer : (d)
Q.12
AIDS related complex or ARC is … [ MPPMT 1994]
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a) Initial form of AIDS
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b) Not linked to AIDS
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c) Severe form of AIDS
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d) Double strand RNA
Explanation
AIDS-related complex is the symptoms of a person who is affected with the AIDS virus but does not necessarily develop the disease. Answer : (c)
Q.13
LSD is formed from … [ CPMT 1994]
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a) Cannabis
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b) Claviceps
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c) Fusarium
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d) Nostoc
Explanation
LSD, potent synthetic hallucinogenic drug that can be derived from the ergot alkaloids of the fungus Claviceps purpurea. Claviceps purpurea is an ergot fungus that grows on the ears of rye and related cereal and forage plants. Answer : (b)
Q.14
Immunity acquired after an infection is … [ MPPMT 1996]
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a) Active immunity
0%
b) Passive immunity
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c) Innate immunity
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d) Both B and C
Explanation
Naturally acquired active immunity occurs when a person is exposed to a live pathogen and develops a primary immune response, which leads to immunological memory. Answer : (a)
Q.15
Each immunoglobulin has two heavy chains and two light chains. The antigen binding site is found in … [ DPMT 2007]
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a) Variable region of heavy chain
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b) Variable region of light chain
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c) Constant region of light chain
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d) Variable region of both heavy and light chain
Explanation
In any given immunoglobulin molecule, the two heavy chains and the two light chains are identical, giving an antibody molecule two identical antigen-binding sites , and thus the ability to bind simultaneously to two identical structures. Answer : (d)
Q.16
Antibody …. [ BHU 1995]
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a) Induces formation of antigen
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b) Helps in production of WBC
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c) Is formed by WBC
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d) None of the above
Explanation
Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). Answer : (c)
Q.17
The parasite which has been recently eradicated from India is …[ CET Chd 2011]
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a) Leishmania donovani
0%
b) Dracunculus medinensis
0%
c) Toxoplasma gondii
0%
d) Taenia solium
Explanation
India was declared as Dracunculus medinensis (guinea worm) disease free country by WHO in 2000 Dracunculiasis, also known as Guinea worm disease (GWD), is an infection caused by the parasite Dracunculus medinensis. A parasite is an organism that feeds off of another to survive. GWD is spread by drinking water containing Guinea worm larvae. Larvae are immature forms of the worm. Answer : (b)
Q.18
kala-azar disease is caused by … [ MPPMT 2004]
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a) Leishmania donovani
0%
b) Trypanosoma gambiense
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c) Taenia solium
0%
d) Wuchereria bancrofti
Explanation
Leishmania donovani is a species of intracellular parasites belonging to the genus Leishmania, a group of haemoflagellate kinetoplastids that cause the disease leishmaniasis. It is a human blood parasite responsible for visceral leishmaniasis or kala-azar, the most severe form of leishmaniasis. Answer : (a)
Q.19
What is true about T-lymphocytes in mammals? … [ CBSE 2003]
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a) There are three main types-cytotoxic, helper and suppressor
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b) They originate in lymphoid tissues
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c) They scavenge damaged cells and cellular debris
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d) They are produced in thyroid
Explanation
There are 3 main types of T cells: cytotoxic, helper, and suppressor (regulatory). Cytotoxic T cells kill target cells bearing specific antigen while sparing neighboring uninfected cells. Helper t cell ,help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells. Suppressor t cell modulate the immune system, maintain tolerance to self-antigens, and prevent autoimmune disease Answer : (a)
Q.20
A severe form of jaundice is caused by … [ Wardha 2002]
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a) Hepatitis C
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b) HIV
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c) Hepatitis A
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d) Hepatitis B
Explanation
Hepatitis B is an infection of liver. It can cause scarring of the organ, liver failure, and cancer. It can be fatal if it isn't treated. It's spread when people come in contact with the blood, open sores, or body fluids of someone who has the hepatitis B virus. Hepatitis C is a liver infection that can lead to serious liver damage Hepatitis A is a viral liver disease that can cause mild to severe illness. Answer : (d)
Q.21
Memory cells are formed from .. [ DPMT 2005]
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a) Erythropoietic stem cells
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b) Monocytes
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c) T-lymphocytes
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d) B-lymphocytes
Explanation
T cells (thymus cells) and B cells (bone marrow- or bursa-derived cells) are the major cellular components of the adaptive immune response. Following activation, B cells and T cells leave a lasting legacy of the antigens they have encountered, in the form of memory cells. naive T cell is a T cell that has differentiated in bone marrow, and successfully undergone the positive and negative processes of central selection in the thymus. Answer : (c,d)
Q.22
Resistance against disease is provided by … [ AMU 2002]
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a) Antigens
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b) Immunoglobulin
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c) Histamine
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d) HLA proteins
Explanation
Immunoglobulins, also known as antibodies, are glycoprotein molecules produced by plasma cells (white blood cells). They act as a critical part of the immune response by specifically recognizing and binding to particular antigens, such as bacteria or viruses, and aiding in their destruction. Answer : (b)
Q.23
Recognition and digestion by phagocytosis due to coated surface of antibodies is … [ Odisha 2005]
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a) Opsonisation
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b) B-cell immunization
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c) T-cell immunization
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d) Immunization
Explanation
Opsonization is the molecular mechanism whereby molecules, microbes, or apoptotic cells are chemically modified to have stronger interactions with cell surface receptors on phagocytes and antibodies. Answer : (a)
Q.24
Which of the following organ is not involved in elicitation of immune response
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a) Thymus
0%
b) Spleen
0%
c) Lymph node
0%
d) Brain
Explanation
Antibodies attach to a specific antigen and make it easier for the immune cells to destroy the antigen. T lymphocytes attack antigens directly and help control the immune response. They also release chemicals, known as cytokines, which control the entire immune response. The brain can modulate some aspects of immune operation, but this does not necessarily imply that we are in conscious control of our immunity Answer : (d)
Q.25
HIV is a member of group of virus called ..[ DPMT 2010]
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a) Bacteriophages
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b) Lysogenic viruses
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c) Retroviruses
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d) Gemini viruses
Explanation
The human immunodeficiency viruses (HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans. Retroviruses are a type of virus in the viral family called Retroviridae. They use RNA as their genetic material and are named for a special enzyme that's a vital part of their life cycle — reverse transcriptase. Answer : (c)
Q.26
Best HLA match for transplants in order of preference is .. [ kerala 2005]
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a) Parent > Sibling > Twin > Unrelated donor
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b) Sibling > Twin > Parent > Unrelated donor
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c) Twin > Sibling > Parent > Unrelated donor
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d) Twin > Unrelated donor > Parent > Sibling
Explanation
HLA match is a process in which blood or tissue samples are tested for human leukocyte antigens (HLAs) HLA is same in identical twins. Hence, twins are the first preference for transplantation, followed by siblings with relative similarities, followed by a parent with some similarities. If the donor from the family members is not available, then least preference is given for unrelated donor. Answer : (c)
Q.27
Use of antihistamines and steroid give a quick relief from .. [ CBSE 2009]
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a) Nausea
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b) Headache
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c) Allergy
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d) Cough
Explanation
Allergy is the hypersensitiveness of a person to some foreign substances coming in contact with or entering the body. The common allergens are dust, pollen mould, spores, fabricates, bacteria, etc. During an allergic reaction, there is increased the release of histamine from mast cells. Use of antihistamines and from mast cells. Use of antihistamine and steroids give a quick relief from allergy Answer : (c)
Q.28
What is true of the psychotropic drug? [ CBSE 2008]
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a) Morphine leads to delusions and disturbed emotions
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b) Barbiturates cause relaxation and temporary cause relaxation and temporary euphoria
0%
c) Hashish causes after thought perceptions and hallucinations
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d) Opium stimulates nervous system and causes hallucination
Explanation
Hashish is an hallucinogen, which alter a persons thought, feeling and perceptions. Morphine is used to pain relievers Barbiturates are sedative-hypnotics Opium as a sedative and for pleasure Answer : (c)
Q.29
ELISA is used in detection of … [ MHTCET 2007]
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a) Hay fever
0%
b) Tetanus
0%
c) AIDS
0%
d) Tuberculosis
Explanation
Answer : (c)
Q.30
Cells of immune system that cause pore formation in the antigen are … [ Odisha 2004]
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a) Helper T-cells
0%
b) Killer T-cells
0%
c) Suppressor T-cells
0%
d) B-cells
Explanation
Answer : (b)
Q.31
Which stage of malaria parasite caused recurrence of malaria ..[ WB 2012]
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a) Merozoite
0%
b) Sporozoite
0%
c) Gametocyte
0%
d) Hypnozoite
Explanation
Hypnozoites are dormant forms in the life cycles of certain parasitic protozoa that belong to the Phylum Apicomplexa (Sporozoa) and are best known for their probable association with latency and relapse in human malarial infections caused by Plasmodium ovale and P. vivax Answer provided by MANISH KUMAR Answer : (a)
Q.32
Alcohol is the most socially accepted narcotic drug. Consumption of alcohol leads to …[ JKCMEE 2011]
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a) State of hallucination
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b) Suppression of brain activity
0%
c) Loss of memory
0%
d) Cirrhosis of liver
Explanation
Cirrhosis is a late stage of scarring (fibrosis) of the liver caused by many forms of liver diseases and conditions, such as hepatitis and chronic alcoholism. whether by disease, excessive alcohol consumption or another cause — it tries to repair itself. Answer : (d)
Q.33
HIV is classified as retrovirus as its genetic information is contained in … [ DPMT 2009]
0%
a) DNA
0%
b) DNA instead of RNA
0%
c) RNA instead of DNA
0%
d) Protein
Explanation
HIV is a retrovirus, which means it carries single-stranded RNA as its genetic material rather than the double-stranded DNA human cells carry. Retroviruses also have the enzyme reverse transcriptase, which allows it to copy RNA into DNA and use that DNA "copy" to infect human, or host, cells. Answer : (c)
Q.34
Cells obtained from cancerous tumour are known as… [ MPPMT 2009]
0%
a) lymphocytes
0%
b) Monoclonal cells
0%
c) Hybridoma
0%
d) Myelomas
Explanation
Answer : (d)
Q.35
Infectious stage of Plasmodium is … [ BHU 1996]
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a) Trophozoite
0%
b)Sporozoite
0%
c) Cryptozoite
0%
d) Metaceyptozoite
Explanation
The P. falciparum sporozoite is able to invade both mosquito and vertebrate host cells. Answer : (b)
Q.36
Which substance, on introduction into human body forms antibody … [ Odisha 2007]
0%
a) Antigen
0%
b) Antibody
0%
c) Histamine
0%
d) Both A and B
Explanation
Antibodies (immunoglobins) are Y-shaped proteins produced by B cells of the immune system in response to exposure to antigens Answer : (a)
Q.37
Pair of viral diseases is … [ CBSE 2009]
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a) Ringworm, AIDS
0%
b) Typhoid, Tuberculosis
0%
c) Dysentery, Common cold
0%
d) Common cold , AIDS
Explanation
The common cold is a viral infection of your nose and throat. Acquired immunodeficiency syndrome (AIDS) is a chronic, potentially life-threatening condition caused by the human immunodeficiency virus (HIV). Answer : (d)
Q.38
Treatment of snake bite by antivenom is providing … [ AIIMS 2004]
0%
a) Artificial acquired active immunity
0%
b) Artificial acquired passive immunity
0%
c) Natural acquired passive immunity
0%
d) Specific natural immunity
Explanation
Antivenom acts to neutralize the poisonous venom of the cobra and causes the venom to be released from the receptor site. Thus, the receptor sites that were previously blocked by venom are now free to interact with the acetylcholine molecule, and normal respiration resumes. Thus body would gain the ability to produce antibodies, and you would eventually be able to survive small doses of the venom which lasts for a few weeks to three to four months Artificially-acquired passive immunity is an immediate, but short-term immunization provided by the injection of antibodies, such as gamma globulin, that are not produced by the recipient's cells. Answer : (b)
Q.39
Chicken pox is caused by … [ CBSE 1992]
0%
a) Varicella virus
0%
b) Adeno virus
0%
c) Bacteriophage T2
0%
d) S.V. 40 virus
Explanation
Chickenpox is an infection caused by the varicella-zoster virus Answer : (a)
Q.40
Benign tertian malaria causing Plasmodium possesses … [ AMU 2001]
0%
a) Pre-erythrocytic cycle
0%
b) erythrocytic cycle
0%
c) Post-erythrocytic cycle
0%
d) All the above
Explanation
Plasmodium Asexual cycle or schizogony in human is completed in following phases: Pre-erythrocytic schizogony Exo-erythrocytic cycle Erythrocytic cycle Post-erythrocytic cycle Formation of gametocytes Answer : (d)
Q.41
During infection T-cells interact with … [ Manipal 1999]
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a) Macrophages
0%
b) B-cells
0%
c) Infected cells
0%
d) Erythrocytes
Explanation
T cells are involved in the cell-mediated immune response, whereas B cells are part of the humoral immune response. T cells can only recognize viral antigens outside the infected cells whereas B cells can recognize the surface antigens of bacteria and viruses Answer : (b)
Q.42
Small pox is due to … [ BHU 1996]
0%
a) Virus
0%
b) Bacterium
0%
c) Helminthes
0%
d) Protozoan
Explanation
Smallpox is caused by infection with the variola virus. The virus can be transmitted: Directly from person to person. Direct transmission of the virus requires fairly prolonged face-to-face contact. Answer : (a)
Q.43
Which is viral disease? …[ AIIMS 1992]
0%
a) Tetanus
0%
b) Dysentery
0%
c) Typhoid
0%
d) None of the above
Explanation
Tetanus is a serious disease caused by a bacterial toxin that affects nervous system Bacterial infections are by far the most common causes of dysentery. Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting. Answer : (d)
Q.44
Which one secretes antibody … [ DPMT 2007]
0%
a) Neutrophil
0%
b) Eosinophil
0%
c) Lymphocyte
0%
d) Monocytes
Explanation
Lymphocytes are divided mainly into B and T cells. B lymphocytes produce antibodies - proteins (gamma globulins) that recognize foreign substances (antigen) and attach themselves to them. B lymphocytes (or B cells) are each programmed to make one specific antibody. Answer : (c)
Q.45
Drug for a medical treatment is obtained from organism. Find the correct option …[ CBSE 2011]
0%
a) Heart - Penicillium
0%
b) Organ transplant - Trichoderma
0%
c) Swine Flue - Monascus
0%
d) AIDS - Pseudomonas
Explanation
Trichoderma polysporium produces cyclosporine A which acts as immunosuppressive agent during organ transplant. They suppress the immune system of the patient so that it does not act against organ transplanted. Answer : (b)
Q.46
Which is a unit of immune system … [ Odisha 2007]
0%
a) Lymphocyte
0%
b) Erythrocyte
0%
c) Chondrocyte
0%
d) Parasite
Explanation
A lymphocyte is one of the subtypes of a white blood cell in a vertebrate's immune system. Lymphocytes include natural killer cells (which function in cell-mediated, cytotoxic innate immunity), T cells (for cell-mediated, cytotoxic adaptive immunity), and B cells (for humoral, antibody-driven adaptive immunity). Answer : (a)
Q.47
An autoimmune disease is …[ Odisha 2004]
0%
a) Cancer
0%
b) Erythroblastosis foetalis
0%
c) Asthma
0%
d) Rheumatoid arthritis
Explanation
rheumatoid arthritis, immune system mistakenly sends antibodies to the lining of your joints, where they attack the tissue surrounding the joint. This causes the thin layer of cells (synovium) covering your joints to become sore and inflamed, releasing chemicals that damage nearby bones Answer : (d)
Q.48
Who discovered oocytes in the stomach of female Anopheles?
0%
a) Golgi
0%
b) Lamble
0%
c) Ronald Ross
0%
d) Charles Lavern
Explanation
Ross made his landmark discovery. He found the malaria parasite and proved that the Anopheles mosquitoes responsible for the transmission of malaria parasites in humans while dissecting the stomach tissue of an anopheline mosquito fed four days previously on a malarious patient. Answer : (c)
Q.49
Heroin is got from plant of family … ..[ MPPMT 1998]
0%
a) Leguminosae
0%
b) Papaveraceae
0%
c) Liliaceae
0%
d) Solanaceae
Explanation
Heroin is ontaned from opium poppy (Papaver somniferum), a plant of family Papaveraceae Answer : (b)
Q.50
Complex formed during immune complex mediated hypersensitivity are removed by ..
0%
a) Eosinophils and T-cells
0%
b) Monocytes and B-cells
0%
c) Eosinophils and monocytes
0%
d) Eosinophils and basophils
Explanation
Hypersensitivity type III reactions involve the interaction of IgG or IgM immunoglobulins with antigen to form immune complexes. Intermediate‐sized immune complexes are difficult to remove by the process of phagocytosis. Answer : (c)
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