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

What is the primary mode of transmission for bacterial infections?

  1. Airborne

  2. Waterborne

  3. Contact

  4. Vector-borne
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bacterial infections are primarily transmitted through direct contact with an infected person or animal, or through contact with contaminated surfaces or objects.

Multiple choice

Which of the following is NOT a type of microorganism that can cause disease in humans?

  1. Bacteria

  2. Virus

  3. Fungus

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

Algae are not microorganisms that can cause disease in humans, as they are photosynthetic organisms that produce oxygen and are not typically associated with infection.

Multiple choice

What is the term used to describe the worldwide spread of a new disease?

  1. Pandemic

  2. Epidemic

  3. Outbreak

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

A pandemic refers to the worldwide spread of a new disease, typically affecting a large number of people across multiple countries or continents.

Multiple choice

What is the term used to describe the ability of a pathogen to cause disease?

  1. Virulence

  2. Pathogenicity

  3. Transmissibility

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

Virulence refers to the ability of a pathogen to cause disease, typically measured by the severity of the symptoms it produces.

Multiple choice

What is the term used to describe the period between infection with a pathogen and the appearance of symptoms?

  1. Virulence

  2. Pathogenicity

  3. Transmissibility

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

The incubation period refers to the period between infection with a pathogen and the appearance of symptoms.

Multiple choice

Which of the following is NOT a common cause of ear infections?

  1. Bacteria

  2. Viruses

  3. Allergies

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

Smoking is not a common cause of ear infections. Bacteria and viruses are the most common causes, while allergies can sometimes contribute to ear infections.

Multiple choice

What is the most common cause of laryngitis?

  1. Bacteria

  2. Viruses

  3. Fungal infection

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

Viruses are the most common cause of laryngitis. Bacteria, fungal infections, and allergies can also cause laryngitis, but they are less common.

Multiple choice

Which of the following is a type of nonlinear differential equation that is often used to model the spread of infectious diseases?

  1. SIR model

  2. SIS model

  3. SEIR model

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

The SIR model, SIS model, and SEIR model are all types of nonlinear differential equations that are often used to model the spread of infectious diseases.

Multiple choice

What is the most common cause of uveitis in children?

  1. Juvenile idiopathic arthritis

  2. Toxoplasmosis

  3. Herpes simplex virus

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

Juvenile idiopathic arthritis, a chronic inflammatory condition, is the most common cause of uveitis in children.

Multiple choice

Which of the following is an example of a non-communicable disease?

  1. Malaria

  2. HIV/AIDS

  3. Heart disease

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

Heart disease is an example of a non-communicable disease, which is a disease that is not caused by an infectious agent.

Multiple choice

Which of the following is an example of a communicable disease?

  1. Cancer

  2. Stroke

  3. Influenza

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

Influenza is an example of a communicable disease, which is a disease that is caused by an infectious agent.

Multiple choice

What is the most common type of foodborne illness?

  1. Salmonella

  2. E. coli

  3. Campylobacter

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

Norovirus is the most common type of foodborne illness, causing an estimated 19 to 21 million illnesses in the United States each year.

Multiple choice

Which of the following foods is most commonly associated with Salmonella outbreaks?

  1. Eggs

  2. Poultry

  3. Beef

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

Eggs are the most commonly associated food with Salmonella outbreaks.

Multiple choice

What is the most common type of foodborne illness caused by E. coli?

  1. E. coli O157:H7

  2. E. coli O121

  3. E. coli O104:H4

  4. E. coli O111
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

E. coli O157:H7 is the most common type of foodborne illness caused by E. coli.

Multiple choice

What is the most common type of foodborne illness caused by Listeria monocytogenes?

  1. Listeriosis

  2. Salmonellosis

  3. E. coli infection

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

Listeriosis is the most common type of foodborne illness caused by Listeria monocytogenes.