Biology ยท 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

Multiple choice

Kalaazar is caused by

  1. Bacteria

  2. Virus

  3. Worms

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Kala-azar (visceral leishmaniasis) is caused by a protozoan parasite of the genus Leishmania, which is not a bacteria, virus, or worm.

Multiple choice

Which of the following is a viral disease?

  1. Tetanus

  2. Chloera

  3. Typhoid

  4. Rabies
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rabies is the only viral disease in this list, caused by the rabies virus. Tetanus is caused by the bacterium Clostridium tetani, cholera by Vibrio cholerae, and typhoid by Salmonella typhi. All three others are bacterial diseases.

Multiple choice

The first level of cause of disease is

  1. inadequate diet

  2. drinking unclean water

  3. medicines

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In public health, the primary cause of many diseases is the lack of basic sanitation, such as access to clean water. Drinking unclean water is a fundamental cause of waterborne diseases.

Multiple choice

Tetanus is a ________ disease.

  1. bacterial

  2. viral

  3. fungal

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tetanus is caused by the bacterium Clostridium tetani, which produces a toxin that affects the nervous system.

Multiple choice

Whooping cough is a fungal disease.

  1. Correct

  2. Not correct

  3. No, it is a viral disease.

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Whooping cough (pertussis) is a bacterial infection caused by the bacterium Bordetella pertussis, not a fungal disease.

Multiple choice

___________ is the third level of cause of disease.

  1. Inadequate food

  2. Unclean water

  3. Lack of public service

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In public health models, the first level of disease cause is often the pathogen, the second is individual health, and the third level relates to broader socio-economic factors like lack of public services.

Multiple choice

Disease is caused in

  1. human

  2. animals

  3. plants

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Disease is a broad term that applies to any impairment of normal physiological function, which can affect humans, animals, and plants.

Multiple choice

Botulism is a disease can be caused by

  1. water

  2. canned food

  3. mosquito bite

  4. air
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Botulism is a rare but serious illness caused by a toxin produced by the bacterium Clostridium botulinum, which often thrives in improperly canned or preserved food.

Multiple choice

Which of the following groups of diseases are caused by bacteria?

  1. Pneumonia, tetanus and diabetes

  2. Pneumonia, tetanus and scurvy

  3. Typhoid, measles and cholera

  4. Typhoid, pneumonia and tuberculosis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Typhoid is caused by Salmonella typhi, pneumonia by Streptococcus pneumoniae, and tuberculosis by Mycobacterium tuberculosis. All three are bacterial infections.

Multiple choice

Diarrhoea is a

  1. gastrointestinal disorder

  2. brain disorder

  3. lung disorder

  4. kidney disorder

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Diarrhoea is a condition characterized by frequent loose or liquid bowel movements, which is a disorder of the gastrointestinal tract.