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 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

What is the most common complication of pneumonia?

  1. Pleural effusion

  2. Empyema

  3. Lung abscess

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

Pneumonia can lead to a number of complications, including pleural effusion, empyema, lung abscess, and respiratory failure.

Multiple choice

What is the most common complication of tuberculosis?

  1. Pulmonary fibrosis

  2. Pleural effusion

  3. Empyema

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

Tuberculosis can lead to a number of complications, including pulmonary fibrosis, pleural effusion, empyema, and respiratory failure.

Multiple choice

What is the most common complication of dengue fever?

  1. Dengue hemorrhagic fever

  2. Dengue shock syndrome

  3. Death

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

Dengue fever can lead to a number of complications, including dengue hemorrhagic fever, dengue shock syndrome, and death.

Multiple choice

What is the most common complication of mumps?

  1. Meningitis

  2. Encephalitis

  3. Orchitis

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

Mumps is a viral infection that can cause a variety of complications, including meningitis, encephalitis, orchitis (inflammation of the testicles), and pancreatitis.

Multiple choice

What is the most common complication of chickenpox?

  1. Pneumonia

  2. Encephalitis

  3. Bacterial skin infections

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

Chickenpox is a viral infection that can cause a variety of complications, including pneumonia, encephalitis, and bacterial skin infections.

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

Which of the following is an example of a non-communicable disease that is primarily caused by infectious agents?

  1. Tuberculosis

  2. Hepatitis B

  3. HIV/AIDS

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tuberculosis, hepatitis B, and HIV/AIDS are all communicable diseases caused by infectious agents.

Multiple choice

Which of the following is a common 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 common foodborne illnesses caused by bacteria. These bacteria can contaminate food through improper handling, storage, or cooking.

Multiple choice

What is the cause of Meniere's Disease?

  1. A virus

  2. A bacterial infection

  3. An autoimmune disorder

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

The exact cause of Meniere's Disease is unknown, but it is thought to be related to a combination of genetic and environmental factors.

Multiple choice

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

  1. Bacterial infection

  2. Viral infection

  3. Fungal infection

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

Parasitic infections are not typically considered to be infectious diseases, as they are not caused by microorganisms.

Multiple choice

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

  1. Contact transmission

  2. Droplet transmission

  3. Airborne transmission

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

Vector-borne transmission is not a mode of transmission for infectious diseases, as it is not caused by microorganisms.

Multiple choice

Which of the following is not a common type of lymphatic disorder?

  1. Lymphoma

  2. Leukemia

  3. Multiple sclerosis

  4. Hodgkin's disease
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Multiple sclerosis is a neurological disorder that affects the brain and spinal cord. It is not a common type of lymphatic disorder. Lymphoma, leukemia, and Hodgkin's disease are all types of lymphatic disorders.

Multiple choice

Which of the following is NOT a common foodborne pathogen?

  1. Salmonella

  2. Escherichia coli (E. coli)

  3. Staphylococcus aureus

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

Lactobacillus is a beneficial bacteria commonly used in fermentation processes, unlike Salmonella, E. coli, and Staphylococcus aureus, which are known foodborne pathogens.