Biology · Science General
Disease Causative Agents
2,258 Questions
Disease causative agents questions test your understanding of viral, bacterial, and fungal infections, along with their transmission methods. These are common topics in general science sections of SSC and railways exams. Practice these questions to accurately identify disease pathogens and symptoms.
Viral diseasesFoodborne illnessesDisease transmission methodsExtrinsic disease factorsCommon pathogens
Disease Causative Agents Questions
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Typhoid
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Cholera
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Tuberculosis
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Bacterial dysentery
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_
A
Correct answer
Explanation
It is a serious disease spread by contaminated food and water.
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Rise period
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Latent period
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Eclipse period
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Fall period
C
Correct answer
Explanation
During eclipse period, phage can be recovered by disrupting the infected bacterium.
A
Correct answer
Explanation
T5 phages do not have contractile sheath.
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Chromosome 17
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Tetrasomy 18p
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Tetrasomy 9p
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Chromosome 7
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Trisomy 21
D
Correct answer
Explanation
In squamous cell carcinoma, a protein from the epidermal growth factor receptor (EGFR) gene is often overexpressed in conjunction with polysomy of chromosome 7, so chromosome 7 can be used to predict the presence of EGFR in squamous cell carcinoma.
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Chickenpox
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Poliomyelitis
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Influenza
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Tuberculosis
D
Correct answer
Explanation
Tuberculosis is caused by the bacterium Mycobacterium tuberculosis. Chickenpox is caused by varicella-zoster virus, poliomyelitis by poliovirus, and influenza by the influenza virus - all are viral diseases.
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marine alga
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PPLO
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viruses
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None of the above
D
Correct answer
Explanation
Ergotism (ergot of rye) is caused by a fungus, Claviceps purpurea.
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Asthma
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Whooping cough
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Diabetes
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Kidney stone
B
Correct answer
Explanation
Pertussis is the medical term for whooping cough, a highly contagious respiratory infection caused by the bacterium Bordetella pertussis. The disease is characterized by severe coughing fits that often end with a "whooping" sound when the person breathes in, hence the common name. It primarily affects children and can be prevented through vaccination, making it an important public health concern.
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Infection of the tonsils
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Inflammation of the Inner ear
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Injury to the nostril lobes
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A disease commonly found in a articular variety of dogs
B
Correct answer
Explanation
Labyrinthitis is inflammation of the inner ear structures, specifically affecting the labyrinth (the complex system of bony and membranous canals that control balance and hearing). The condition disrupts the vestibular system, causing symptoms like dizziness, vertigo, nausea, and sometimes temporary hearing loss. The inflammation interferes with the inner ear's ability to send proper signals to the brain about body position and movement.
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arsenic
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cadmium
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mercury
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beryllium
C
Correct answer
Explanation
Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was named after Minamata City in Japan where it was first discovered in 1956, caused by methylmercury released in industrial wastewater from a chemical factory. Symptoms include ataxia, numbness, muscle weakness, and in severe cases, insanity, coma, and death.
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Malaria, tetanus, kala-azar, african sleeping sickness
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Anthrax, ancylostomiasis, malaria, cholera
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Ascariasis, rabies, tetanus, african sleeping sickness
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Tuberculosis, anthrax, tetanus, cholera
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Anthrax, tetanus, african sleeping sickness, dengue
D
Correct answer
Explanation
Tuberculosis (TB) is an infectious disease that is caused by a bacterium called Mycobacterium tuberculosis.
Anthrax is an infection that is caused by the bacteria Bacillus anthracis.
Tetanus or lockjaw is a serious infection caused by Clostridium tetani bacteria.
Cholera is an acute epidemic infectious disease caused by the bacterium Vibrio cholerae.
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Malaria, chikungunya, kala-azar, enterobiasis
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Chikungunya, rabies, poliomyelitis, common cold
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Rabies, tuberculosis, enterobiasis, poliomyelitis
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Tuberculosis, poliomyelitis, enterobiasis, common cold
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Chikungunya, common cold, tuberculosis, kala-azar
B
Correct answer
Explanation
Chikungunya is a viral disease transmitted to humans by infected mosquitoes.
Rabies is a viral disease that is spread most often from the bite of a rabid animal to another animal or to a human.
Poliomyelitis is a highly contagious infectious disease caused poliovirus.
Common cold is a mild viral infection of the nose, throat, sinuses and upper airways.
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Asthma, diabetes, tetanus
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Asthma, scurvy, diabetes
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Diabetes, tetanus, scurvy
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Influenza, scurvy, cholera
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Tetanus, cholera, dengue
B
Correct answer
Explanation
Asthma, scurvy, diabetes: All are non-communicable diseases.
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1 only
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2 only
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3 only
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1 and 2
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1 and 3
A
Correct answer
Explanation
Poliomyelitis spreads when the stool of an infected person is introduced into the mouth of another person through contaminated water or food (fecal-oral transmission).
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1, 2 and 3
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2, 3 and 6
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3 and 5
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3, 4 and 6
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4, 5 and 6
B
Correct answer
Explanation
Balantidiasis is transmitted primarily by eating food or drinking water that has been contaminated by human or animal faeces containing Balantidium coli cysts.
Cholera is transmitted from person to person through ingesting water or food infected with Vibrio cholerae.
Typhoid is transmitted through Salmonella typhi.
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1, 2 and 3
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1, 3 and 5
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2, 3 and 4
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3, 4 and 5
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All of the above
A
Correct answer
Explanation
Smallpox is highly contagious disease. People get infected with smallpox virus by inhaling droplets of saliva, which are full of virus, during face-to-face contact with infected person.
Diphtheria is spread (transmitted) from person to person, usually through respiratory droplets, from coughing or sneezing.
Influenza viruses are spread mainly by droplets made when people with flu cough, sneeze or talk.