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 term used to describe the ability of a pathogen to cause severe disease or death in a host organism?

  1. Pathogenicity

  2. Virulence

  3. Infectivity

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

Virulence refers to the degree of pathogenicity of a microorganism, indicating its ability to cause severe disease or death in a host organism.

Multiple choice

What is the term used to describe the ability of a pathogen to establish and maintain an infection in a host organism?

  1. Pathogenicity

  2. Virulence

  3. Infectivity

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

Persistence refers to the ability of a pathogen to survive and remain viable within a host organism, often evading the host's immune defenses and causing chronic or recurrent infections.

Multiple choice

What is the term used to describe the ability of a pathogen to cause infection in a host organism?

  1. Pathogenicity

  2. Virulence

  3. Infectivity

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

Infectivity refers to the ability of a pathogen to enter and establish an infection in a host organism, often quantified by the number of organisms required to cause infection.

Multiple choice

Which microorganism was discovered on the International Space Station (ISS) and raised concerns about its potential impact on human health?

  1. Staphylococcus aureus

  2. Escherichia coli

  3. Salmonella typhimurium

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

Staphylococcus aureus, a bacterium commonly found on human skin, was detected on the ISS and raised concerns due to its ability to cause infections in humans.

Multiple choice

According to Indian medical philosophy, what is the primary cause of disease?

  1. Imbalance of the doshas

  2. Infection by microorganisms

  3. Genetic factors

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

According to Indian medical philosophy, the primary cause of disease is an imbalance of the doshas, which are the three basic humors of the body.

Multiple choice

What is the risk of developing an egg allergy if one parent has an egg allergy?

  1. 25%

  2. 50%

  3. 75%

  4. 100%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The risk of developing an egg allergy if one parent has an egg allergy is estimated to be 25%.

Multiple choice

What is the causative agent of the common cold?

  1. Bacteria

  2. Virus

  3. Fungus

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

The common cold is caused by a virus, typically a rhinovirus.

Multiple choice

What is the flu?

  1. A type of respiratory infection

  2. A type of gastrointestinal infection

  3. A type of skin infection

  4. A type of blood infection
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The flu is a type of respiratory infection caused by the influenza virus.

Multiple choice

What is pneumonia?

  1. A type of respiratory infection

  2. A type of gastrointestinal infection

  3. A type of skin infection

  4. A type of blood infection
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pneumonia is a type of respiratory infection that affects the lungs.

Multiple choice

What is tuberculosis?

  1. A type of respiratory infection

  2. A type of gastrointestinal infection

  3. A type of skin infection

  4. A type of blood infection
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tuberculosis is a type of respiratory infection caused by the bacteria Mycobacterium tuberculosis.

Multiple choice

Which of the following is NOT a 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, while heart disease, stroke, and cancer are non-communicable diseases.

Multiple choice

Which of the following is a type of chronic respiratory disease?

  1. Asthma

  2. Chronic obstructive pulmonary disease (COPD)

  3. Pneumonia

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

Chronic obstructive pulmonary disease (COPD) is a type of chronic respiratory disease that is characterized by airflow limitation.

Multiple choice

Which of the following is a type of chronic respiratory disease?

  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 type of chronic respiratory disease that is characterized by recurrent episodes of wheezing, coughing, and shortness of breath.

Multiple choice

Which of the following is a type of chronic respiratory disease?

  1. Asthma

  2. Chronic obstructive pulmonary disease (COPD)

  3. Pneumonia

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

Pneumonia is a type of chronic respiratory disease that is characterized by inflammation of the lungs.

Multiple choice

Which of the following is a type of chronic respiratory disease?

  1. Asthma

  2. Chronic obstructive pulmonary disease (COPD)

  3. Pneumonia

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

Tuberculosis is a type of chronic respiratory disease that is caused by a bacterium.