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

What is the primary mode of transmission of tuberculosis?

  1. Airborne

  2. Contact

  3. Fomite

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

Tuberculosis is primarily transmitted through the air when an infected person coughs or sneezes.

Multiple choice

What is the most common type of respiratory infection in children?

  1. Common Cold

  2. Influenza

  3. Pneumonia

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

Bronchiolitis is the most common type of respiratory infection in children, caused by a virus.

Multiple choice

What is the causative agent of whooping cough?

  1. Bacteria

  2. Virus

  3. Fungus

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

Whooping cough is caused by the bacterium Bordetella pertussis.

Multiple choice

Which of the following is not a complication of whooping cough?

  1. Pneumonia

  2. Encephalitis

  3. Myocarditis

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

Pneumonia, encephalitis, and myocarditis are all potential complications of whooping cough.

Multiple choice

What is the most common type of respiratory infection in the elderly?

  1. Common Cold

  2. Influenza

  3. Pneumonia

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

Pneumonia is the most common type of respiratory infection in the elderly.

Multiple choice

Which of the following is NOT a type of emerging infectious disease?

  1. Zoonosis

  2. Vector-borne disease

  3. Foodborne disease

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

Chronic diseases are not considered emerging infectious diseases because they are not caused by a newly discovered or re-emerging infectious agent.

Multiple choice

What is the term used to describe the process by which an infectious disease spreads from animals to humans?

  1. Zoonosis

  2. Vector-borne transmission

  3. Foodborne transmission

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

Zoonosis is the term used to describe the process by which an infectious disease spreads from animals to humans.

Multiple choice

What is the term used to describe an infectious disease that is transmitted through the consumption of contaminated food or water?

  1. Foodborne disease

  2. Waterborne disease

  3. Vector-borne disease

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

Foodborne disease is the term used to describe an infectious disease that is transmitted through the consumption of contaminated food or water.

Multiple choice

Which of the following is NOT a common mode of transmission for airborne diseases?

  1. Coughing

  2. Sneezing

  3. Talking

  4. Touching surfaces contaminated with the virus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Touching surfaces contaminated with the virus is not a common mode of transmission for airborne diseases because the virus is typically spread through direct contact with respiratory droplets.

Multiple choice

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

  1. Pathogenicity

  2. Virulence

  3. Transmissibility

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

Pathogenicity is the term used to describe the ability of a microorganism to cause disease.

Multiple choice

What is the term used to describe the period of time between exposure to an infectious agent and the onset of symptoms?

  1. Incubation period

  2. Latent period

  3. Convalescent period

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

Incubation period is the term used to describe the period of time between exposure to an infectious agent and the onset of symptoms.

Multiple choice

Which of the following is NOT a type of bacterial infection?

  1. Pneumonia

  2. Tuberculosis

  3. Influenza

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

Influenza is a viral infection, not a bacterial infection.

Multiple choice

Which of the following is NOT a type of non-communicable disease?

  1. Heart disease

  2. Stroke

  3. Cancer

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

Malaria is a communicable disease caused by a parasite transmitted by mosquitoes. Non-communicable diseases, on the other hand, are not caused by infectious agents.

Multiple choice

Which of the following is NOT a waterborne disease?

  1. Cholera

  2. Typhoid

  3. Malaria

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

Malaria is not a waterborne disease, but rather a mosquito-borne disease.

Multiple choice

What is the primary cause of endocarditis?

  1. Viral infection

  2. Bacterial infection

  3. Fungal infection

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

Endocarditis is predominantly caused by bacterial infections, particularly those caused by Staphylococcus aureus and Streptococcus species.