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 type of foodborne illness?

  1. Salmonella

  2. E. coli

  3. Influenza

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

Influenza is a respiratory illness caused by a virus. It is not a foodborne illness.

Multiple choice

What is the most common cause of pharyngitis?

  1. Bacterial infection

  2. Viral infection

  3. Fungal infection

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

Viral infections, particularly those caused by adenoviruses and rhinoviruses, are the most common cause of pharyngitis.

Multiple choice

Which bacteria is responsible for causing streptococcal pharyngitis?

  1. Streptococcus pyogenes

  2. Streptococcus pneumoniae

  3. Streptococcus agalactiae

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

Streptococcus pyogenes, also known as Group A Streptococcus (GAS), is the primary cause of streptococcal pharyngitis.

Multiple choice

Which of the following is a potential complication of untreated streptococcal pharyngitis?

  1. Rheumatic fever

  2. Kidney inflammation

  3. Pneumonia

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

Rheumatic fever is a potential complication of untreated streptococcal pharyngitis, leading to inflammation of the heart, joints, and brain.

Multiple choice

What is the term used to describe inflammation of the tonsils, often associated with pharyngitis?

  1. Tonsillitis

  2. Laryngitis

  3. Sinusitis

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

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

Multiple choice

Which of the following is a potential complication of chronic or recurrent pharyngitis?

  1. Peritonsillar abscess

  2. Obstructive sleep apnea

  3. Rheumatic fever

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

Chronic or recurrent pharyngitis can lead to complications such as peritonsillar abscess, obstructive sleep apnea, and rheumatic fever.

Multiple choice

Which of the following is a common ear infection in middle-aged adults?

  1. Otitis media

  2. Otitis externa

  3. Labyrinthitis

  4. Ménière's disease
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Otitis media, also known as middle ear infection, is a common ear infection that can occur in middle-aged adults.

Multiple choice

Which of the following is NOT a common type of disease monitoring system?

  1. Syndromic surveillance system

  2. Laboratory-based surveillance system

  3. Sentinel surveillance system

  4. Population-based surveillance system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Syndromic surveillance system is not a common type of disease monitoring system. It is a type of surveillance that monitors data on non-specific symptoms or syndromes, rather than specific diseases.

Multiple choice

Which of the following is NOT a common type of disease outbreak?

  1. Point source outbreak

  2. Continuous source outbreak

  3. Propagated outbreak

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

Mixed outbreak is not a common type of disease outbreak. It refers to an outbreak that has characteristics of both point source and continuous source outbreaks.

Multiple choice

What discovery led to the spread of deadly diseases in the 19th century?

  1. Germ theory of disease

  2. Vaccination

  3. Antibiotics

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

The discovery of the germ theory of disease led to the understanding that diseases are caused by microorganisms, but it also led to the spread of deadly diseases due to lack of proper hygiene and sanitation.

Multiple choice

What is the leading cause of foodborne illness in the United States?

  1. Bacteria

  2. Viruses

  3. Parasites

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

Bacteria are the leading cause of foodborne illness in the United States.

Multiple choice

Which of the following is a common waterborne disease associated with urbanization?

  1. Cholera

  2. Typhoid

  3. Dysentery

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

Cholera, typhoid, and dysentery are all common waterborne diseases associated with urbanization.

Multiple choice

Which of the following is a type of foodborne illness caused by bacteria?

  1. Salmonella

  2. E. coli

  3. Listeria

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

Salmonella, E. coli, and Listeria are all types of foodborne illness caused by bacteria. These bacteria can be found in raw or undercooked meat, poultry, eggs, and dairy products.

Multiple choice

Which of the following is a type of foodborne illness caused by a virus?

  1. Norovirus

  2. Hepatitis A

  3. Rotavirus

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

Norovirus, Hepatitis A, and Rotavirus are all types of foodborne illness caused by viruses. These viruses can be found in contaminated food or water.

Multiple choice

Which of the following is a type of foodborne illness caused by a parasite?

  1. Giardia

  2. Cryptosporidium

  3. Toxoplasma gondii

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

Giardia, Cryptosporidium, and Toxoplasma gondii are all types of foodborne illness caused by parasites. These parasites can be found in contaminated food or water.