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Quiz 8
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Q.1
Which of the following is not spread by droplet method?
0%
a) Measles
0%
b) Diphtheria
0%
c) Pertussis
0%
d) Gonorrhea
Explanation
Gonorrhea is transmitted through sexual contact with the penis, vagina, mouth, or anus of an infected partner. Answer : (d)
Q.2
Which one is a viral disease? … [ CET Chd 1997]
0%
a) Diphtheria
0%
b) Typhoid
0%
c) Cholera
0%
d) Measles
Explanation
Measles is a highly contagious virus that lives in the nose and throat mucus of an infected person. It can spread to others through coughing and sneezing. Also, measles virus can live for up to two hours in an airspace where the infected person coughed or sneezed. Answer : (b)
Q.3
Antigens are found ..[ CBSE 1995]
0%
a) Inside cytoplasm
0%
b) Inside nucleus
0%
c) On nuclear envelope
0%
d) On cell surface
Explanation
Cell markers, also known as cell surface antigens, serve as monograms to help identify and classify cells. The majority of them are molecules or antigens within cell's plasma membrane. Unique to different cell types, there exist specific combinations of markers or antigens. Answer : (d)
Q.4
Fever, delirium, slow pulse, abdominal tenderness and rose coloured rash indicate the disease … [ JIPMER 1997]
0%
a) Typhoid
0%
b) Measles
0%
c) tetanus
0%
d) Chicken pox
Explanation
First symptoms of typhoid may include a high fever, headache, stomach pain, a dry cough, and an overall feeling of weakness and muscle pain. In some cases, a rash with rose-colored patches and delirium can also occur. Answer : (a)
Q.5
…. .. is an antiviral substance produced by animals in response to viral infection …
0%
a) Antigen
0%
b) Repressor protein
0%
c) Antivirin
0%
d) Interferon
Explanation
Answer : (d)
Q.6
Opiate narcotic is … [ CBSE 1993]
0%
a) Bhang
0%
b) Charas
0%
c) Heroin
0%
d) Nicotine
Explanation
Answer : (c)
Q.7
Bursa of Fabricius of birds is associated with … [ WB 2012]
0%
a) Generation of basophils
0%
b) Generation of B-cells
0%
c) Metabolism of fatty acids
0%
d) Production of uric acid
Explanation
Answer : (b)
Q.8
Find out the odd one for parasitism .. [ Guj CET 2009]
0%
a) Bed Bug
0%
b) Lice
0%
c) Mite
0%
d) Plasmodium
Explanation
Answer : (d)
Q.9
Localised inflammatory response at the sight of infection producing redness, swelling, pain and heat is due to
0%
a) Histamine and cerumen
0%
b) Prostaglandins and histamine
0%
c) Cerumen and prostaglandins
0%
d) Cerumen and mucus
Explanation
The prostaglandins are a group of lipids made at sites of tissue damage or infection that are involved in dealing with injury and illness. They control processes such as inflammation, blood flow, the formation of blood clots and the induction of labour. Histamine is involved in the inflammatory response and has a central role as a mediator of itching. cerumen is technical term for earwax. Mucus is a normal, slippery and stringy fluid substance produced by many lining tissues in the body. Answer : (b)
Q.10
Congenital diseases are …. [ CMC 1993]
0%
a) Diseases present at birth
0%
b) Deficiency diseases
0%
c) Spread from one individual to another
0%
d) Occur during life
Explanation
A birth defect, also known as a congenital disorder Answer : (a)
Q.11
During inflammation, which of the following is secreted by connective tissue ..[ CPMT 2007]
0%
a) Serotonin
0%
b) Heparin
0%
c) Glucagon
0%
d) Histamine
Explanation
Histamine is involved in the inflammatory response Histamine is produced by basophils and by mast cells found in nearby connective tissues. Answer : (d)
Q.12
Rejection of organ transplant is due to .. [ AMU 2009]
0%
a) NK cells
0%
b) B-cells
0%
c) Cytotoxic T –cells
0%
d) Suppressor T-cells
Explanation
Cytotoxic T lymphocytes (CTLs) or killer T cells, represent one of several types of cells of the immune system that have the capacity to directly kill other cells. suppressor T cell A type of immune cell that blocks the actions of some other types of lymphocytes, to keep the immune system from becoming over-active. Answer : (c)
Q.13
Sarcoma is cancer of … [ CBSE 1994]
0%
a) Epithelial tissue
0%
b) Mesodermal tissue
0%
c) Blood
0%
d) Endodermal tissues
Explanation
A sarcoma is a type of cancer that starts in tissues like bone or muscle. Sarcoma, tumour of connective tissue that is formed from mesodermal, or mesenchymal, cells. Answer : (b)
Q.14
Assertion : Interferon are a type of antibodies produced by body cells infected by bacteria Reason : Interferon stimulate inflammation at the site of injury
0%
a) If both the assertion and reason are true and reason explains the assertion.
0%
b) If both the assertion and reason are true but reason does not explain the assertion
0%
c) If assertion is true but reason is false
0%
d) If assertion is false but reason is true.
Explanation
Interferons are a group of signaling proteins made and released by host cells in response to the presence of several viruses. Interferons (IFNs) and pro- and anti-inflammatory cytokines are crucial for appropriate response to pathogens, damaged cells, or irritants in inflammatory response. Answer : (d)
Q.15
Prophylactic drug for malaria is ..[ JIPMER 1999]
0%
a) Tetracycline
0%
b) Nux vomica
0%
c) Aspirin
0%
d) Paludrine
Explanation
Paludrine contains a medicine called proguanil hydrochloride. This belongs to a group of medicines called 'anti-malarials'. Answer : (d)
Q.16
Which of the following diseases is caused by virus? … [ AFMC 2012]
0%
a) Tuberculosis
0%
b) Typhoid
0%
c) Polio
0%
d) Diphtheria
Explanation
Tuberculosis (TB) is caused by a type of bacterium called Mycobacterium Typhoid fever is caused by a type of bacteria called Salmonella typhi. Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus. Diphtheria is a serious infection caused by strains of bacteria called Corynebacterium diphtheriae that make a toxin Answer : (c)
Q.17
Progenitors formed in bone marrow but differentiating elsewhere are ,,, [ EAMCET 2005]
0%
a) Pre-NK cells
0%
b) Pre-erythroblasts
0%
c) Pre-T cells
0%
d) Myeloblast
Explanation
T lymphocytes develop from a common lymphoid progenitor in the bone marrow that also gives rise to B lymphocytes, but those progeny destined to give rise to T cells leave the bone marrow and migrate to the thymus Answer : (c)
Q.18
Match the columns … [ kerala 2011]
a)
Haemophilus
p) malignant malaria
b)
Entamoeba
q) Elephantiasis
c)
Plasmodium falciparum
r) Pneumonia
d)
Wuchereria bancrofti
s) Typhoid
e)
Salmonella typhi
t) Amoebiasis
0%
a) a – p, b – t, c – r, d – q, e – s
0%
b) a –r, b- t, c –p, d – q, e – s
0%
c) a – t, b – p, c- r, d- s, e – q
0%
d) a – p, b – r, c – q, d – t, e – s
Explanation
Haemophilus influenzae type b causes pneumonia, septicaemia, meningitis, epiglottitis, septic arthritis, cellulitis, otitis media, and purulent pericarditis, as well as less common invasive infections such as endocarditis, osteomyelitis, and peritonitis. a –r Amebiasis is a disease caused by the parasite Entamoeba histolytica.b- t, Plasmodium falciparum, the causative agent of malignant malaria,.c –p, Wuchereria bancrofti is a human parasitic worm (Filariworm) that is the major cause of lymphatic filariasis.d – q, Typhoid fever is caused by a type of bacteria called Salmonella typhi e – s Answer : (b)
Q.19
Lips of Ascaris are …[ Odisha 2012]
0%
a) One dorsal and two ventrolateral
0%
b) One dorsal and one ventral
0%
c) Two dorsal and one ventrolateral
0%
d) Two dorsal and two ventral
Explanation
Ascaris are typically large worms (up to about 40 cm long) characterized by a mouth surrounded by three lips, One dorsal and two ventrolateral Answer : (a)
Q.20
Which is involved in body defense? … [ AMU 2002]
0%
a) Neutrophils
0%
b) Macrophages
0%
c) Lymphocytes
0%
d) All the above
Explanation
The cells of the immune system can be categorized as lymphocytes (T-cells, B-cells and NK cells), neutrophils, and monocytes/macrophages. These are all types of white blood cells. The major proteins of the immune system are predominantly signaling proteins (often called cytokines), antibodies, and complement proteins. Answer : (d)
Q.21
One of the inflammatory reaction induced by histamine is … [ JKCMEE 2007]
0%
a) vasoconstriction of blood vessels
0%
b) Vasodilation of peripheral blood vessels
0%
c) Increased vascular permeability
0%
d) Accelerated blood clotting
Explanation
In an allergic reaction, mast cells release histamine which triggers allergy symptoms Vasodilation occurs naturally in your body in response to triggers such as low oxygen levels, a decrease in available nutrients, and increases in temperature. It causes the widening of your blood vessels, which in turn increases blood flow and lowers blood pressure. Although vasodilation is a natural process, there are situations in which it can be harmful, such as in severe hypotension, allergic reactions, and strong inflammatory responses. consequence of vasodilation , will increase vascular permeability Vasoconstriction is the narrowing (constriction) of blood vessels by small muscles in their walls. When blood vessels constrict, blood flow is slowed or blocked. Vasoconstriction may be slight or severe. It may result from disease, drugs, or psychological conditions. Accelerated blood clotting was triggered by another disease or condition. Answer : (b)
Q.22
Which of the following is not correct matched? … [ CBSE 1995]
0%
a) Dengue fever - Arbovirus
0%
b) Plague - Yersinia pestis
0%
c) Syphilis - Trichuris trichiura
0%
d) Sleeping Sickness - Trypanosoma gambiense
Explanation
Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Arbovirus is an informal name used to refer to any viruses that are transmitted by arthropod vectors. Option 'a' is correct match Plague is caused by the bacteria Yersinia pestis. Option 'b' is correct match The cause of syphilis is a bacterium called Treponema pallidum. Option 'c' is NOT correct match. sleeping sickness is caused by microscopic parasites of the species Trypanosoma brucei. Option 'd' is correct match Answer : (c)
Q.23
Assertion:: A person who has received a cut and is bleeding needs to be given anti-tetanus treatment Reason: Anti-tetanus injection provides immunity by producing antibodies for tetanus … [ AIIMS : 2006]
0%
a) If both the assertion and reason are true and reason explains the assertion.
0%
b) If both the assertion and reason are true but reason does not explain the assertion
0%
c) If assertion is true but reason is false
0%
d) If assertion is false but reason is true.
Explanation
Tetanus is caused by a toxin made by spores of bacteria, Clostridium tetani, found in soil, dust and animal feces. When the spores enter a deep flesh wound, they grow into bacteria that can produce a powerful toxin, tetanospasmin. The type of vaccination for this disease is called artificial active immunity. This type of immunity is generated when a dead or weakened version of the disease enters the body, causing an immune response which includes the production of antibodies Answer : (a)
Q.24
Which is introduced during small pox vaccination? … [ MPPMT 1997]
0%
a) Antibodies
0%
b) Leucocytes
0%
c) Antibiotics
0%
d) Attenuated virus
Explanation
Attenuated virus: A weakened, less vigorous virus. An attenuated virus may be used to make a vaccine that is capable of stimulating an immune response and creating immunity, but not of causing illness. Answer : (d)
Q.25
Which state of Plasmodium is infective for mosquito? .. [ RPMT 1996]
0%
a) Trophozoite
0%
b) Gametocyte
0%
c) Ookinete
0%
d) Sporozoite
Explanation
Gametocytes are sexual precursor cells of the malaria parasite that mediate the transmission of the parasite from its mammalian host to the Anopheles mosquito. Answer : (b)
Q.26
Ringworm infection is caused by … [ MPPMT 2012]
0%
a) Wuchereria
0%
b) Trichophyton
0%
c) Ascaris
0%
d) Aedes
Explanation
Scientific names for the types of fungi that cause ringworm are Trichophyton, Microsporum, and Epidermophyton. Answer : (b)
Q.27
Lymphatic filariasis is caused by …
0%
a)Wuchereria
0%
b) Ascaris
0%
c) Taenia
0%
d) Fasciola
Explanation
Wuchereria bancrofti is a human parasitic worm (Filariworm) that is the major cause of lymphatic filariasis. Answer : (a)
Q.28
Irrational fear of disease is … ..[ AIIMS 1997]
0%
a) Algophobia
0%
b) Mysophobia
0%
c) Pathophobia
0%
d) Haematophobia
Explanation
Pathophobia is an irrational fear of disease Algophobia or algiophobia is a phobia of pain Mysophobia is a pathological fear of contamination and germs. Haematophobia is an extreme irrational fear of blood Answer : (c)
Q.29
Resistance developed in an individual as a result of antigenic stimulus is … [ Tamilnadu 2001]
0%
a) Natural immunity
0%
b) Active acquired immunity
0%
c) Passive acquired immunity
0%
d) Artificial immunity
Explanation
Acquired immunity is the immunity obtained either from the development of antibodies in response to exposure to an antigen, as from vaccination or an attack of an infectious disease or from the transmission of antibodies, as from mother to fetus through the placenta or the injection of antiserum. Active acquired immunity results from the development of antibodies in response to an antigenic stimulus, as from exposure to an infectious disease or through vaccination. Answer : (b)
Q.30
A molecule that produces an immune response is … [ MPPMT 1997]
0%
a) Antigen
0%
b) Antibody
0%
c) Carcinogen
0%
d) Mutagen
Explanation
Antigen is a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies. Antibodies are Y-shaped proteins that bind to the body's foreign invaders and signal the immune system to get to work. Carcinogen is any substance, radionuclide, or radiation that promotes carcinogenesis, the formation of cancer. Mutagen is a physical or chemical agent that changes the genetic material, usually DNA, of an organism and thus increases the frequency of mutations above the natural background level. Answer : (a)
Q.31
Coffee and Tea are … [ AMU 1993]
0%
a) Fermented beverages
0%
b) Alcoholic beverages
0%
c) Distilled beverages
0%
d) Nonalcoholic beverages
Explanation
Coffee and Tea are Nonalcoholic beverages Answer : (d)
Q.32
A compound formed in an organism for inhibiting growth of another organism is … [ MPPMT 1995]
0%
a) Antigen
0%
b) Antibody
0%
c) Antibiotic
0%
d) Antiallergic
Explanation
Antibodies bind to specific antigens on pathogens; this binding can inhibit pathogen infectivity by blocking key extracellular sites, such as receptors involved in host cell entry. Antibodies can also induce the innate immune response to destroy a pathogen, by activating phagocytes such as macrophages or neutrophils, which are attracted to antibody-bound cells. Antigen Substance that can induce an immune response Answer : (b)
Q.33
Use of Cannabis products results in … .. [ CBSE 1997]
0%
a) Alteration in perception, thoughts and feelings
0%
b) Depressed brain activity and feeling of calmness
0%
c) Suppressed brain function and relief in pain
0%
d) Stimulation of nervous system, increased alertness and activity
Explanation
Mental symptoms of cannabis addiction can include: Problems concentrating or focusing Delayed responsiveness Poor judgement Impaired ability to track the passage of time Indecisiveness Dramatic mood swings Agitation Irritability Paranoia Answer : (a)
Q.34
Cells involved in immune mechanism are … [ CBSE 1993]
0%
a) Erythrocytes
0%
b) Lymphocytes
0%
c) Eosinophils
0%
d) Thrombocytes
Explanation
Cells involved in immune mechanism are Lymphocytes Lymphocytes are white blood cells that are also one of the body's main types of immune cells. They are made in the bone marrow and found in the blood and lymph tissue. The immune system is a complex network of cells known as immune cells that include lymphocytes. The cells of the immune system can be categorized as lymphocytes (T-cells, B-cells and NK cells), neutrophils, and monocytes/macrophages. These are all types of white blood cells. The major proteins of the immune system are predominantly signaling proteins (often called cytokines), antibodies, and complement proteins. Answer : (b)
Q.35
Excessive and inappropriate immune response to an antigen is … [ HPPMT 2007]
0%
a) Anaphylaxis
0%
b) Multiple sclerosis
0%
c) Allergy
0%
d) Immune deficiency
Explanation
Histamine causes many of the symptoms of allergy. Allergy a term is used to describe exaggerated, inappropriate immune responses to usually harmless substances. Answer : (c)
Q.36
A disease on the verge of extinction in India is … [ AFMC 2001]
0%
a) AIDS
0%
b) Kala-azar
0%
c) Poliomyelitis
0%
d) Measles
Explanation
Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus. In 2014, India was officially declared polio-free, along with the rest of the South-East Asia Region. Answer : (c)
Q.37
T-lymphocytes are … [ WB 2009]
0%
a) Formed in thymus
0%
b) Formed in bone marrow and preprocessed in thymus
0%
c) Formed in bone marrow and preprocessed in bone marrow
0%
d) Formed and preprocessed in bone marrow
Explanation
T lymphocytes develop from a common lymphoid progenitor in the bone marrow that also gives rise to B lymphocytes, but those progeny destined to give rise to T cells leave the bone marrow and migrate to the thymus The Thymus Gland Preprocess the T Lymphocytes. The T lymphocytes, after origination in the bone marrow, first migrate to the thymus gland. Here they dived rapidly and at the same time develop extreme diversity for reacting at the same time develop extreme diversity for reacting against different specific antigens Answer : (b)
Q.38
Select the correct statement from the ones given below … [ CBSE 2010]
0%
a) Morphine is often given to a person who have undergone surgery as a pain killer
0%
b) Chewing tobacco lowers blood pressure and heart rate
0%
c) Cocaine is given to patients after surgery as it stimulates recovery
0%
d) Barbiturates when given to criminals make them tell the truth
Explanation
Morphine is often given to a person who have undergone surgery as a pain killer. Statement 'a' is correct. Chewing tobacco high blood pressure and heart rate. Statement 'b' is not correct. Cocaine is a natural stimulant. It stimulates nervous system and delays fatigue.Statement 'c' is not correct. Barbiturates are sedative-hypnotics which means they have sleep inducing effects. Statement 'd' is not correct Answer : (a)
Q.39
One of the following is a stimulant … ..[ Kerala 2004]
0%
a) Opium
0%
b) LSD
0%
c) Cocaine
0%
d) Heroin
Explanation
Cocaine, the drug goes quickly to the brain. There it stimulates a buildup of a large amount of dopamine, the neurotransmitter that signals a sense of pleasure. This flood of dopamine is what causes the feeling of euphoria that users experience. Answer : (c)
Q.40
Spread of cancerous cells to distant places is … [ MPPMT 1999]
0%
a) Malignancy
0%
b) Metastasis
0%
c) Mutations
0%
d) Benign tumour
Explanation
Metastasis is the development of secondary malignant growths at a distance from a primary site of cancer. Answer : (b)
Q.41
Shape of antibody is like …[ JKCET 2012]
0%
a) N
0%
b) Z
0%
c) Y
0%
d) O
Explanation
Answer : (c)
Q.42
Suspension of attenuated pathogen that stimulates antibody formation is … [ MPPMT 1994]
0%
a) Antitoxin
0%
b) Antibiotic
0%
c) Vaccine
0%
d) Sera
Explanation
A vaccine is a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains a suspension of disease-causing microorganism and is often made from weakened (attenuated) or killed forms of the microbe, its toxins, or one of its surface proteins. The agent stimulates the body's immune system and produces antibodies. Answer : (c)
Q.43
People administered with preformed antibodies get …. [ kerala 2012]
0%
a) Active immunity
0%
b) Passive immunity
0%
c) Innate immunity
0%
d) Auto-immunity
Explanation
Passive immunity is the administration of antibodies to an unimmunized person from an immune subject to provide temporary protection against a microbial agent or toxin. Answer : (b)
Q.44
Paraplegia is paralysis of … [ CBSE 1992]
0%
a) Upper limbs
0%
b) Lower limbs
0%
c) One limb
0%
d) Body
Explanation
Paraplegia is a form of paralysis that mostly affects the movement of the lower body. People with paraplegia may be unable to voluntarily move their legs, feet, and sometimes their abdomen. Answer : (b)
Q.45
One of the following is not cancer … [ MHT CET 2002]
0%
a) Carcinoma
0%
b) Glaucoma
0%
c) Sarcoma
0%
d) Lymphoma
Explanation
Glaucoma is a group of eye conditions that damage the optic nerve Answer : (b)
Q.46
Exceptions to Koch’s postulates are ..[ AMU 2011]
0%
a) Viruses
0%
b) Fungi
0%
c) Protozoans
0%
d) Spirochaete
Explanation
Robert Koch’s postulates are the four criteria designed to assess whether a microorganism causes a disease. (1) The microorganism must be found in diseased but not healthy individuals; (2) The microorganism must be cultured from the diseased individual; (3) Inoculation of a healthy individual with the cultured microorganism must recapitulated the disease; and finally (4) The microorganism must be re-isolated from the inoculated, diseased individual and matched to the original microorganism. Viruses cannot be grown in standard microbiological broths or on agar plates, instead they have be to cultured inside suitable host cells. Answer : (a)
Q.47
Which is correctly matched … [ CBSE 2012]
0%
a) Anti tetanus and anti snake bite injections – Active immunity
0%
b) polymorphonuclear leucocytes and monocytes – Cellular barrier
0%
c) Saliva in mouth and tears in eyes – Physical barriers
0%
d) Mucus coating epithelium, urogenital tract and HCL in stomach – Physiological barriers
Explanation
polymorphonuclear leukocyte and Monocytes is a type of white blood cell. Leukocytes (WBCs) and natural killer cells (NK) in the blood are two types of cells that acts as 'cellular barriers' to provide innate immunity in humans. Answer : (b)
Q.48
Vaccines produced through genetic engineering are safe as … [ BHU 1992]
0%
a) They contain antigen only from coat of pathogen
0%
b) They are least active form of virus
0%
c) They are attenuated from of pathogen
0%
d) All the above
Explanation
Antigens are proteins that are found on the surface of the pathogen. Antigens are unique to that pathogen. These antibodies can be isolated and used as vaccines. Protein antigens are produced using recombinant DNA technology, where the DNA sequence coding for the antigenic protein is inserted into an expression system that is then able to produce large quantities of that specific antigen Answer : (a)
Q.49
Common cold differs from pneumonia in the pneumonia …[ CBSE 2012]
0%
a) Is communicable while common cold is deficiency disease
0%
b) Can be prevented by vaccine while common cold has no vaccine
0%
c) Is caused by virus while common cold is caused by bacterium Haemophilus influenza
0%
d) Infects alveoli while common cold affects nose and respiratory passage but not lungs
Explanation
The common cold is a viral infection of the lining of the nose, sinuses, and throat. Pneumonia is a bacterial, viral, or fungal infection of one or both sides of the lungs that causes the air sacs, or alveoli, of the lungs to fill up with fluid or pus. Answer : (d)
Q.50
A person showing unpredictable moods,outburst of emotions, quarrelsome behavior and conflicts was others is suffering from … ..[ AIIMS 2006]
0%
a) Additive disorder
0%
b) Schizophrenia
0%
c) Borderline personality disorder
0%
d) Mood disorders
Explanation
Borderline personality disorder shows following symptoms 1. Impulsive and risky behavior, such as having unsafe sex, gambling or binge eating. 2. Unstable or fragile self-image. 3. Unstable and intense relationships. 4. Up and down moods, often as a reaction to interpersonal stress. 5. Suicidal behavior or threats of self-injury. Additive disorder shows Depressed, hopeless or suicidal feelings. Schizophrenia involves a range of problems with thinking (cognition), behavior and emotions. Signs and symptoms may vary, but usually involve delusions, hallucinations or disorganized speech, and reflect an impaired ability to function. The following are the most common symptoms of a mood disorder: 1. Ongoing sad, anxious, or “empty” mood. 2. Feeling hopeless or helpless. 3. Having low self-esteem. 4. Feeling inadequate or worthless. 5. Excessive guilt. Answer : (c)
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