Biology · Science General

Disease Causative Agents

2,531 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

Multiple choice

Which of the following is not a bacterial disease?

  1. Lyme disease

  2. Chlamydiasis

  3. Dental caries

  4. West Nile fever

  5. Anthrax
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

West Nile fever is caused by a virus transmitted by mosquitoes and whose reservoir includes wild birds and mosquitoes.

Multiple choice

All of the following are bacterial diseases, except

  1. listeriosis

  2. leptospirosis

  3. diphtheria

  4. elephantiasis

  5. tularemia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Elephantiasis is a syndrome caused by infection with a nematode parasite called the filarial worm (Wuchereria bancrofti). It is a disease that is characterised by the thickening of the skin and underlying tissues, especially in the legs, male genitals.

Multiple choice

Cat-scratch disease is caused by

  1. Bacillus anthracis

  2. Bartonella henselae

  3. Bordetella pertussis

  4. Coxiella burnetii

  5. Trypanosoma brucei
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cat-scratch disease is a common and usually benign infectious disease caused by a bacterium, either Bartonella henselae or Bartonella quintana. It is most commonly found in children following a scratch or bite from a cat within about one to two weeks.

Multiple choice

Varucella zoster virus causes

  1. measles and mumps

  2. mumps and rubella

  3. rubella and chickenpox

  4. chickenpox and shingles

  5. shingles and measles
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chickenpox is a highly contagious disease caused by the initial infection with varicella zoster virus. Shingles is an infection of a nerve area caused by the varicella zoster virus.

Multiple choice

Which of the following is a pair of diseases caused by Neisseria bacteria?

  1. Cholera and Diphtheria

  2. Leprosy and Typhoid

  3. Gonorrhoea and Meningococcal meningitis

  4. Bulbonic plague and Tetanus

  5. Syphilis and Whooping cough
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cholera is an infection of the intestine by the bacterium Vibrio cholerae. Diphtheria is caused by the Corynebacterium diphtheriae bacterium.

Multiple choice

All of the following are Rickettsial diseases, except

  1. rheumatic fever

  2. rocky mountain spotted fever

  3. murine typhus

  4. typhus fever

  5. trench fever
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rheumatic fever is an inflammatory disease that may develop as a complication of a Streptococcus infection such as strep throat or scarlet fever (caused by Streptococcus pyogenes or group A beta-hemolytic streptococcus).

Multiple choice

Which of the following is not a viral disease?

  1. Dengue fever

  2. Gas gangrene

  3. Hepatitis A

  4. Herpes simplex

  5. Influenza
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gas gangrene is a bacterial infection that produces gas in tissues in gangrene. This deadly form of gangrene is usually caused by Clostridium perfringens bacteria.

Multiple choice

The diseases caused by prions are

  1. Kuru and Scrapie

  2. Kuru and Thrush

  3. Scrapie and Rabies

  4. Rabies and Thrush

  5. Scrapie and Thrush
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Kuru is among the fatal neurodegenerative prion protein (PrP) diseases in humans. Scrapie is a neurodegenerative disease, caused by a prion, that affects sheep and occasionally goats.

Multiple choice

Which of the following is a pair of bacterial diseases?

  1. Pontiac fever and Lymphocytic choriomeningitis

  2. Pontiac fever and Middle East respiratory syndrome

  3. Lymphocytic choriomeningitis and Middle East respiratory syndrome

  4. Lymphocytic choriomeningitis and Nocardiosis

  5. Nocardiosis and Pontiac fever
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Nocardiosis is an infectious disease affecting either the lungs or the whole body caused due to infection by bacterium of the genus Nocardia. Pontiac fever is an acute, non-fatal respiratory disease caused by various species of Gram-negative bacteria in the genus Legionella.

Multiple choice

__________________ is a viral disease.

  1. Rocky Mountain Spotted Fever

  2. Ebola hemorrhagic fever

  3. Dutch elm disease

  4. Legionnaires' disease

  5. Cryptosporidiosis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ebola, previously known as Ebola hemorrhagic fever, is a rare and deadly disease caused by infection with one of the Ebola virus strains.