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Q.1
AIDS does not spread … [ JIPMER 2004]
0%
a) By sexual intercourse
0%
b) By hand
0%
c) Through blood
0%
d) From mother to baby
Explanation
AIDS does not spread by the handshak Answer : (b)
Q.2
A kind of allergy is … [ MPPMT 1995]
0%
a) Asthma
0%
b) Yellow eyes
0%
c) Mumps
0%
d) Typhoid
Explanation
Allergies and asthma often occur together. The same substances that trigger your hay fever symptoms, such as pollen, dust mites and pet dander, may also cause asthma signs and symptoms. In some people, skin or food allergies can cause asthma symptoms. Answer : (a)
Q.3
Cholera is due to … [ DPMT 1992]
0%
a) Protozoan
0%
b) Fungus
0%
c) Virus
0%
d) Bacterium
Explanation
A bacterium called Vibrio cholerae causes cholera infection. Answer : (d)
Q.4
Cancer cells are damaged by radiations while others are not due to cancer cells …[ AFMC 2011]
0%
a) Being starved
0%
b) Being different in nature
0%
c) Immature and undergoing rapid division
0%
d) None of the above
Explanation
Cancer cells are less organized than healthy cells, it's harder for them to repair the damage done by radiation. So cancer cells are more easily destroyed by radiation, while healthy, normal cells are better able to repair themselves and survive the treatment. Answer : (c)
Q.5
Dengue is caused by …. [ AFMC 2011]
0%
a) Female Anopheles
0%
b) Female Aedes
0%
c) Male Anopheles
0%
d) All the above
Explanation
Aedes aegypti, the principal mosquito vector of dengue viruses is an insect closely associated with humans and their dwellings. The viruses are passed on to humans through the bites of an infective female Aedes mosquito, which mainly acquires the virus while feeding on the blood of an infected person Answer : (b)
Q.6
Chemically an antibody is … [ CBSE 1996]
0%
a) Protein
0%
b) Lipoprotein
0%
c) Lipid
0%
d) Nucleoprotein
Explanation
An antibody, also known as an immunoglobulin (Ig), is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses Answer : (a)
Q.7
Hay fever is due to … [ AFMC 2002]
0%
a) Hepatitis
0%
b) Allergy
0%
c) Dengue
0%
d) Helper T-cells
Explanation
Hay fever is caused by an allergic response to outdoor or indoor allergens, such as pollen, dust mites, or tiny flecks of skin and saliva shed by cats, dogs, and other animals with fur or feathers Answer: (b)
Q.8
Antibody is connected with … [ CET Chd. 2003]
0%
a) Immune system
0%
b) Digestive system
0%
c) Respiratory system
0%
d) Skeletal system
Explanation
Antibody is connected with Immune system Answer : (a)
Q.9
Opium is got from … .. [ AFMC 1998]
0%
a) Thea sinensis
0%
b) Coffea Arabica
0%
c) Oryza sativa
0%
d) Papaver somniferum
Explanation
Papaver somniferum, commonly known as the opium poppy Answer : (d)
Q.10
Secondary host of Taenia solium is … [ AFMC 1996]
0%
a) Cow
0%
b) Pig
0%
c) Sheep
0%
d) Human
Explanation
Taenia solium is a tapeworm which has humans as its definitive host and often pigs as intermediate or secondary host. Answer : (b)
Q.11
Increased asthma attack in certain seasons are due to … [ CBSE 2007]
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a) Inhalation of seasonal pollen
0%
b) Heat and humidity
0%
c) Low temperature
0%
d) Eating preserved fruits
Explanation
ncreased asthmatic attacks in certain seasons , are related to inhalation of seasonal pollen. Pollens are microscopic grains produced by plants in order to reproduce. Pollen allergy is a hypersensitive reaction to pollen. Answer : (a)
Q.12
A water borne disease is … [ MPPMT 1994]
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a) Small pox
0%
b) Tuberculosis
0%
c) Malaria
0%
d) Cholera
Explanation
Cholera is a diarrheal disease caused by the bacterium Vibrio cholerae. It is almost always transmitted by water or food that has been contaminated by human waste. Answer : (d)
Q.13
Macrophages are derived from … [ MHTCET 2010]
0%
a) Neutrophils
0%
b) Lymphocytes
0%
c) Monocytes
0%
d) Basophils
Explanation
Macrophages that reside in adult healthy tissues either derive from circulating monocytes or are established before birth and then maintained during adult life independently of monocytes. Answer : (c)
Q.14
Which disease is caused by a nematode? … [ AIIMS 1993]
0%
a) Poliomyelitis
0%
b) Leprosy
0%
c) Filariasis
0%
d) Amoebiasis
Explanation
Filariasis is a rare infectious tropical disorder caused by the round worm parasites (nematode) Wuchereria bancrofti or Brugia malayi. Answer : (c)
Q.15
Which one is carcinoma … [ Guj CET 2006]
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a) Cancer of lymph gland
0%
b) Cancer of muscle
0%
c) Cancer of blood
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d) Melanoma cancer of skin
Explanation
carcinoma is a cancer that begins in a tissue that lines the inner or outer surfaces of the body, and that arises from cells originating in the endodermal, mesodermal or ectodermal germ layer during embryogenesis. Answer : (d)
Q.16
eutrophilis secrete chemicals for attracting neutrophils, monocytes, eosinophils, attachment to endothelium and dilating capillaries .. [ AMU 2009]
0%
a) Cytokines
0%
b) Monokines
0%
c) Leukotriene
0%
d) Lymphokine
Explanation
Cytokine network include Several different cell types coordinate their efforts as part of the immune system, including B cells, T cells, macrophages, mast cells, neutrophils, basophils and eosinophils. Cytokines induce macrophage are released at inflammatory foci. This causes vasodilation. Answer : (a)
Q.17
Which immunoglobulin is the largest in size ..[ Odisha 2004]
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a) IgA
0%
b) IgD
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c) IgE
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d) IgM
Explanation
IgM is the largest antibody, and it is the first antibody to appear in the response to initial exposure to an antigen. Answer : (d)
Q.18
Surgical removal of thymus of a new born shall result in failure to produce …[ CPMT 1993]
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a) Monocytes
0%
b) B-lymphocytes
0%
c) T-lymphocytes
0%
d) Basophils
Explanation
T-cells or T lymphocyte mature in the thymus gland or in the lymph nodes. Thus Surgical removal of thymus of a new born shall result in failure to produce T-lymphocytes Answer : (c)
Q.19
A mosquito borne viral disease is … [ DPMT 2010]
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a) Malaria and Chagas’ disease
0%
b) Yellow fever and Dengue
0%
c) Filariasis and Typhus
0%
d) Kala-azar and Diphtheria
Explanation
Diseases transmitted by mosquitoes include malaria, dengue,yellow fever, West Nile virus, chikungunya, filariasis, tularemia, dirofilariasis, Japanese encephalitis, Saint Louis encephalitis, Western equine encephalitis, Eastern equine encephalitis, Venezuelan equine encephalitis, Ross River fever, Barmah Forest fever, La Crosse encephalitis, and Zika fever, Answer : (b)
Q.20
Nuclear leakage is …[ AFMC 2011]
0%
a) Carcinogenic
0%
b) Immunosuppressant
0%
c) Autoimmunising
0%
d) Infectious
Explanation
leaks with nuclear installation is that radioactive material might get discharged into the environment which have relatively high levels of ionizing radiation causing cancer or Carcinogenic Answer : (a)
Q.21
An autoimmune disease is … [ BHU 1998]
0%
a) AIDS
0%
b) Haemophilia
0%
c) Asthma
0%
d) Myasthenia gravis
Explanation
Myasthenia gravis (MG) is a relatively rare acquired, autoimmune disorder caused by an antibody-mediated blockade of neuromuscular transmission resulting in skeletal muscle weakness. Answer : (d)
Q.22
Antibody formation and immunity production by globulin protein is found in … [ AIIMS 1993]
0%
a) Haemoglobin of RBCs
0%
b) Blood platelets
0%
c) Plasma
0%
d) Cytoplasm of RBCs
Explanation
Gamma globulins act as the antibody defense against antigen invasion. ... Gamma globulins are manufactured in cells of the immune system known as lymphocytes and plasma cells. Answer : (c)
Q.23
Lysozyme found in saliva, perspiration and tears, destroys …[ CBSE 2007]
0%
a) Certain fungi
0%
b) Certain bacteria
0%
c) All viruses
0%
d) Most virus infected cells
Explanation
Lysozyme is found in many body fluids such as tears, saliva or mucus to protect body surfaces from bacterial infections. Answer : (b)
Q.24
An opiate narcotic is .. ..[ CBSE 1997]
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a) Morphine
0%
b) LSD
0%
c) Amphetamine
0%
d) Barbiturate
Explanation
Examples opiate narcotic include the illicit drug heroin and pharmaceutical drugs like OxyContin, Vicodin, codeine, morphine, methadone, and fentanyl. Answer : (a)
Q.25
After entering T-cell, HIV first forms .. [ MHTCET 2009]
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a) mRNA
0%
b) ssDNA
0%
c) ds DNA
0%
d) ds RNA
Explanation
HIV releases and uses reverse transcriptase to convert its genetic material—HIV RNA—into HIV DNA. The conversion of HIV RNA to HIV DNA allows HIV to enter the Helper T-cell nucleus and combine with the cell's genetic material—cell DNA (ssDNA). Answer : (b)
Q.26
Leprosy is due to … [ CBSE 1992]
0%
a) Monocystis
0%
b) TMV
0%
c) Mycobacterium
0%
d) Salmonella
Explanation
Hansen's disease also known as leprosy is an infection caused by slow-growing bacteria called Mycobacterium leprae. Answer : (c)
Q.27
Perspiration contains an enzyme that kills bacteria. It is … [ kerala 2004]
0%
a) Lipase
0%
b) lysozyme
0%
c) Protease
0%
d) Reductase
Explanation
Lysozyme is found in tears, sweat and saliva. Lysozyme is an enzyme that breaks down bacterial cell walls and provides protection against bacterial invasion in the skin, mucous membranes and many body fluids. Answer : (b)
Q.28
Which is not a symptom of Entamoeba histolytica
0%
a) Relapsing fever
0%
b) Abdominal pain
0%
c) Blood in stool
0%
d) Irregular bowel
Explanation
Symptom of Entamoeba histolytica Loose stools, mild abdominal cramping, frequent, watery, and/or bloody stools with severe abdominal cramping (termed amoebic dysentery) may occur, flatulence, appetite loss, and fatigue.. Answer : (a)
Q.29
Assertion : Cancer is contagious and cells can spread from one person to other Reason: Cancerous cells are highly differentiated cells
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 and reason false.
Explanation
Cancer is the most common human genetic disease. Assertion ststement is false Well-differentiated cancer cells look more like normal cells and tend to grow and spread more slowly than poorly differentiated or undifferentiated cancer cells.. Reason statement is false Answer : (d)
Q.30
Aedes spreads [ MHT CET 2011]
0%
a) Malaria
0%
b) Dengue
0%
c) Sleeping sickness
0%
d) Kala-azar
Explanation
Dengue viruses are spread to people through the bites of infected Aedes species mosquitoes Answer : (b)
Q.31
Leprosy is also called … [ Wardha 2001]
0%
a) Hansen’s disease
0%
b) Infantile paralysis
0%
c) Koch’s disease
0%
d) Pertussis
Explanation
Hansen's disease is also known as leprosy, is an infection caused by slow-growing bacteria called Mycobacterium leprae. Answer : (a)
Q.32
Which one is correctly matched
0%
a) Oncogenes – Ageing
0%
b) Initiation factor – Amino acid activation
0%
c) Replication fork – mRNA
0%
d) AIDS virus – Reverse transcriptase
Explanation
An oncogene is a gene that has the potential to cause cancer. Option 'a' is NOT correctly matched. Initiation factors are proteins that bind to the small subunit of the ribosome during the initiation of translation, a part of protein biosynthesis. Amino acid activation refers to the attachment of an amino acid to its Transfer RNA (tRNA). Option 'b' is NOT correctly matched. The replication fork is a very active area where DNA replication takes place. The mRNA produced in transcription is a copy of the sense strand, but it is the antisense strand that is transcribed. Option 'c' is NOT correctly matched. HIV releases and uses reverse transcriptase to convert its genetic material—HIV RNA—into HIV DNA. The conversion of HIV RNA to HIV DNA allows HIV to enter the Helper T-cell nucleus and combine with the cell's genetic material—cell DNA.Option 'd' is correctly matched Answer : (d)
Q.33
Which one is the most infectious disease … [ CBSE 2001]
0%
a) AIDS
0%
b) Hepatitis-B
0%
c) Malaria
0%
d) Cough and Cold
Explanation
The common cold is contagious; it can be spread by air droplets from coughs and sneezes and by touching infected surfaces. HIV is a sexually transmitted infection and can also be spread by contact with infected blood or from mother to child during pregnancy, childbirth, or breast-feeding. Hepatitis B is highly contagious. It spreads through contact with infected blood and certain other bodily fluids. Malaria is not transmitted person to person. Although it is an infectious disease, it is not communicable in most instances to uninfected individuals. Answer : (d)
Q.34
Malarial parasite can be obtained in RBCs of patient ..[ CBSE 1992]
0%
a) When temperature reaches normal
0%
b) An hour before rise in temperature
0%
c) When temperature rise with rigor
0%
d) A few hours after temperature reaches normal
Explanation
The increase in temperature is due to the haemozoin that is released as the parasite break open the membrane and at the same time some of the parasites are converted to merozoites whose presence in blood can be detected Answer : (c)
Q.35
Which one provides non-specific defense against pathogens? .. [ Odisha 2008]
0%
a) T- cells
0%
b) Phagocytes
0%
c) B-cells
0%
d) Stem cells
Explanation
Nonspecific defenses include physical and chemical barriers, the inflammatory response, and interferons. All animals have phagocytes that recognize and eliminate foreign invaders which are second line of defense. Answer : (b)
Q.36
Cancer is … [ Wardha 2005]
0%
a) Air borne
0%
b) Viral disease
0%
c) Environmental disorder
0%
d) Cellular disease
Explanation
Cancer is a broad term. It describes the disease that results when cellular changes cause the uncontrolled growth and division of cells. Answer : (d)
Q.37
Interferon have been used in the treatment of … [ CET Chd 2011]
0%
a) Ascariasis
0%
b) Influenza
0%
c) Filariasis
0%
d) Giardiasis
Explanation
Influenza is a viral infection antiviral drugs that have been used to treat other viral infections is the most all interferons share several common effects: they are antiviral agents. Ascariasis is an infection of the small intestine caused by Ascaris lumbricoides, which is a species of roundworm. Filariasis is a parasitic disease Giardia is a microscopic parasite Answer : (b)
Q.38
Which of the following is quartan in periodicity? [ Odisha 2005]
0%
a) P. malariae
0%
b) P.vivax
0%
c) P.ovale
0%
d) P.falciparum
Explanation
P. malariae is the only human malaria parasite that causes fevers that recur at approximately three-day intervals,therefore occurring every fourth day, a quartan fever, longer than the two-day (tertian) intervals of the other malarial parasites. Answer : (a)
Q.39
Antibody formed of five immunoglobulin units parameter is … [ AMU 2009]
0%
a) IgG
0%
b) IgM
0%
c) IgA
0%
d) IgD
Explanation
Immunoglobulin M ( IgM ) is constructed of five or six units (i.e. mostly as pentamers but also hexamers occur) which are each comprised of two heavy-chains (mu-chains) and two light chains, bound together by disulfide bonds and a so-called J-chain. Answer : (b)
Q.40
Assertion: Histamine is involved in allergic and inflammatory reactions Reason: Histamine is vasodilator
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
The allergic and inflammatory response (inflammation) occurs when tissues are injured by bacteria, trauma, toxins, heat, or any other cause. The damaged cells release chemicals including histamine, bradykinin, and prostaglandins. These chemicals cause blood vessels to leak fluid into the tissues, causing swelling. Histamine, causes arteriolar vasodilation, venous constriction in some vascular beds, and increased capillary permeability. These effects increase local blood flow and cause tissue edema. Answer : (a)
Q.41
Typhoid is caused by … [ CBSE 1998]
0%
a) Escherichia
0%
b) Shigella
0%
c) Salmonella
0%
d) Giardia
Explanation
Typhoid fever is caused by a type of bacteria called Salmonella typhi. This isn't the same bacteria that cause salmonella food poisoning, but the two are related. Answer : (c)
Q.42
In polio, the legs get paralysed and atrophied due to … [ CBSE 1992]
0%
a) Obstruction of muscles
0%
b) Degradation of bones
0%
c) Death of some muscles
0%
d) Shrinkage of muscles
Explanation
Polio is an infectious disease caused by the poliovirus. Polio sometime progresses to paralytic disease. This is because the muscles become weak, floppy and poorly controlled and finally, completely die off or gets paralyzed Answer : (c)
Q.43
Schuffner’s dots are related to …[ JIPMER 1993]
0%
a) Entamoeba histolytica
0%
b) Leucocyte
0%
c) Mosquito
0%
d) RBCs of human
Explanation
Plasmodium vivax induces morphologic alterations in infected host RBCs of human (erythrocytes) that are visible by light microscopy in Romanowsky-stained blood smears as multiple brick-red dots. Answer : (d)
Q.44
Trypanosomiasis is spread by ..[ AFMC 1993]
0%
a) Housefly
0%
b) Sandfly
0%
c) Tsetse
0%
d) Culex
Explanation
African Trypanosomiasis, also known as “sleeping sickness”, is caused by microscopic parasites of the species Trypanosoma brucei. It is transmitted by the tsetse fly (Glossina species), which is found only in sub-Saharan Africa. Answer : (c)
Q.45
TAB vaccine is useful against … [ MHTCET 2009]
0%
a) Polio
0%
b) Pertussis
0%
c) Diphtheria
0%
d) Typhoid
Explanation
TAB vaccine is a combined vaccine used to produce immunity against the diseases typhoid, paratyphoid A, and paratyphoid B Answer : (d)
Q.46
Passive immunity is obtained through injecting …[ BHU 1998]
0%
a) Antibiotics
0%
b) Vaccines
0%
c) Antibodies
0%
d) Antigens
Explanation
Passive immunity can occur naturally, such as when an infant receives a mother's antibodies through the placenta or breast milk, or artificially, such as when a person receives antibodies in the form of an injection Answer : (c)
Q.47
Syphilis is caused by … [ CBSE 1999]
0%
a) Treponema pallidum
0%
b) Leptospira
0%
c) Pasteurella
0%
d) Vibrio
Explanation
The cause of syphilis is a bacterium called Treponema pallidum . Answer : (a)
Q.48
Ingestion of marijuana leads to illusions altering thoughts, feelings and perceptions. Marijuana is … [ MPPMT 1994]
0%
a) Sedative
0%
b) Stimulant
0%
c) Narcotic
0%
d) Hallucinogen
Explanation
Under the influence of marijuana people may experience an acute psychosis, which includes hallucinations, delusions, and a loss of the sense of personal identity. These unpleasant but temporary reactions are distinct from longer-lasting psychotic disorders, such as schizophrenia, Answer : (d)
Q.49
Assertion: AIDS is caused by HIV, a retrovirus Reason: Retrovirus have RNA genome … ] AIIMS 2012]
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
Assertion and reason are true but not dependant statement hence If both the assertion and reason are true but reason does not explain the assertion. Answer : (b)
Q.50
Which ones engulf foreign materials? … [ AFMC 2000]
0%
a) Macrophages
0%
b) Plasma cells
0%
c) Mast cells
0%
d) Lymphocytes
Explanation
Macrophages are large, specialized cells that recognize, engulf and destroy target cells. Answer : (a)
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