Biology ยท 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 an example of a climate-sensitive disease?

  1. Malaria

  2. Dengue fever

  3. Cholera

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

Malaria, dengue fever, and cholera are all examples of climate-sensitive diseases. Malaria and dengue fever are transmitted by mosquitoes, which are sensitive to changes in temperature and precipitation. Cholera is a waterborne disease that is more likely to occur during floods and other extreme weather events.

Multiple choice

Which of the following is NOT a common type of foodborne illness?

  1. Salmonella

  2. E. coli

  3. Influenza

  4. Listeria
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Influenza is a respiratory illness caused by a virus, while Salmonella, E. coli, and Listeria are common types of foodborne illnesses caused by bacteria.

Multiple choice

Which of the following is NOT a common foodborne illness caused by bacteria?

  1. Salmonella

  2. E. coli

  3. Influenza

  4. Botulism
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Influenza is a respiratory illness caused by a virus, while Salmonella, E. coli, and Botulism are common types of foodborne illnesses caused by bacteria.

Multiple choice

Which of the following is NOT a common foodborne illness caused by a virus?

  1. Hepatitis A

  2. Norovirus

  3. Influenza

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

E. coli is a type of bacteria, while Hepatitis A, Norovirus, and Influenza are common foodborne illnesses caused by viruses.

Multiple choice

Which of the following is NOT a common foodborne illness caused by a parasite?

  1. Trichinosis

  2. Toxoplasmosis

  3. Influenza

  4. Giardiasis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Influenza is a respiratory illness caused by a virus, while Trichinosis, Toxoplasmosis, and Giardiasis are common foodborne illnesses caused by parasites.

Multiple choice

What is the most common cause of otitis externa?

  1. Bacteria

  2. Virus

  3. Fungus

  4. Parasite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacteria are the most common cause of otitis externa, with Pseudomonas aeruginosa and Staphylococcus aureus being the most frequently isolated organisms.

Multiple choice

What are the complications of otitis externa?

  1. Spread of infection to the middle ear or mastoid bone

  2. Permanent hearing loss

  3. Facial paralysis

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

Complications of otitis externa can include spread of infection to the middle ear or mastoid bone, permanent hearing loss, and facial paralysis.

Multiple choice

Which of the following is NOT a complication of otitis externa?

  1. Spread of infection to the middle ear or mastoid bone

  2. Permanent hearing loss

  3. Facial paralysis

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

Tinnitus is not a complication of otitis externa. Spread of infection to the middle ear or mastoid bone, permanent hearing loss, and facial paralysis are all complications of otitis externa.

Multiple choice

Which chronic disease is characterized by recurrent episodes of wheezing, coughing, and shortness of breath?

  1. Asthma

  2. Chronic obstructive pulmonary disease (COPD)

  3. Pneumonia

  4. Tuberculosis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Asthma is a chronic disease characterized by recurrent episodes of wheezing, coughing, and shortness of breath due to inflammation and narrowing of the airways.

Multiple choice

What is the most common cause of a sore throat?

  1. Bacteria

  2. Virus

  3. Allergies

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

Viral infections, such as the common cold or influenza, are the most common cause of a sore throat.

Multiple choice

Which of the following is a bacterial infection of the throat?

  1. Strep throat

  2. Tonsillitis

  3. Laryngitis

  4. Croup
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Strep throat is a bacterial infection of the throat caused by the bacteria Streptococcus pyogenes.

Multiple choice

How is a sore throat diagnosed?

  1. Physical examination

  2. Throat culture

  3. Rapid strep test

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

A sore throat is diagnosed through a physical examination, throat culture, and rapid strep test.

Multiple choice

What is tonsillitis?

  1. Inflammation of the tonsils

  2. Inflammation of the adenoids

  3. Inflammation of the larynx

  4. Inflammation of the epiglottis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tonsillitis is the inflammation of the tonsils, which are two small masses of tissue at the back of the throat.

Multiple choice

Which virus causes polio?

  1. Poliovirus type 1

  2. Poliovirus type 2

  3. Poliovirus type 3

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

Polio is caused by three types of poliovirus: type 1, type 2, and type 3.

Multiple choice

How is polio transmitted?

  1. Through contact with an infected person's feces

  2. Through contact with an infected person's saliva

  3. Through contact with contaminated food or water

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

Polio is transmitted through contact with an infected person's feces, saliva, or contaminated food or water.