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 for influenza virus, which causes the flu?

  1. Airborne droplets

  2. Contact with contaminated surfaces

  3. Ingestion of contaminated food or water

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

Influenza virus is primarily transmitted through airborne droplets produced by coughing, sneezing, or talking.

Multiple choice

Which autoimmune disease affects the skin and mucous membranes, causing blistering and sores?

  1. Pemphigus vulgaris

  2. Psoriasis

  3. Eczema

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

Pemphigus vulgaris is an autoimmune disease that causes blistering and sores on the skin and mucous membranes due to the immune system attacking proteins that hold skin cells together.

Multiple choice

What is an infectious disease?

  1. A disease caused by a pathogen

  2. A disease caused by a non-pathogen

  3. A disease caused by a virus

  4. A disease caused by a bacteria
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An infectious disease is a disease caused by a pathogen, which can be a virus, bacteria, fungus, or parasite.

Multiple choice

What is a pandemic?

  1. A global outbreak of an infectious disease

  2. A local outbreak of an infectious disease

  3. A regional outbreak of an infectious disease

  4. A national outbreak of an infectious disease
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A pandemic is a global outbreak of an infectious disease that affects a large number of people worldwide.

Multiple choice

What are the three main types of infectious diseases?

  1. Bacterial, viral, and fungal

  2. Bacterial, viral, and parasitic

  3. Bacterial, viral, and prion

  4. Bacterial, viral, and protozoan
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The three main types of infectious diseases are bacterial, viral, and parasitic.

Multiple choice

How are infectious diseases transmitted?

  1. Through contact with an infected person or animal

  2. Through contact with contaminated food or water

  3. Through contact with contaminated surfaces

  4. Through the air
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Infectious diseases can be transmitted through contact with an infected person or animal, through contact with contaminated food or water, through contact with contaminated surfaces, and through the air.

Multiple choice

What are some of the most common infectious diseases in the world?

  1. HIV/AIDS

  2. Tuberculosis

  3. Malaria

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

Some of the most common infectious diseases in the world include HIV/AIDS, tuberculosis, malaria, and hepatitis B.

Multiple choice

What is the most common cause of death from infectious diseases?

  1. Pneumonia

  2. Tuberculosis

  3. HIV/AIDS

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

Pneumonia is the most common cause of death from infectious diseases.

Multiple choice

What is the most common cause of death from tuberculosis?

  1. HIV/AIDS

  2. Malaria

  3. Pneumonia

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

HIV/AIDS is the most common cause of death from tuberculosis.

Multiple choice

What is sepsis?

  1. A life-threatening condition caused by the body's response to an infection.

  2. A type of bacterial infection.

  3. A virus that can cause pneumonia.

  4. A type of cancer that affects the blood.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sepsis is a life-threatening condition that occurs when the body's response to an infection damages its own tissues and organs.

Multiple choice

How is sepsis diagnosed?

  1. Blood culture.

  2. Urine culture.

  3. Chest X-ray.

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

Blood culture, urine culture, and chest X-ray are all used to diagnose sepsis.

Multiple choice

What is the most common cause of styes and chalazia?

  1. Bacteria

  2. Viruses

  3. Blocked oil glands

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

The most common cause of styes and chalazia is blocked oil glands.

Multiple choice

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

  1. Cholera

  2. Typhoid

  3. Hepatitis A

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

Cholera, typhoid, and hepatitis A are all common waterborne diseases associated with contaminated groundwater.

Multiple choice

What is the most common disease that affects egg production in hens?

  1. Avian influenza

  2. Newcastle disease

  3. Marek's disease

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

Infectious bronchitis is the most prevalent disease that affects egg production in hens. It is a highly contagious respiratory disease that can cause a significant drop in egg production.

Multiple choice

What are some common food safety hazards?

  1. Bacteria.

  2. Viruses.

  3. Parasites.

  4. Chemicals.

  5. All of the above.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Common food safety hazards include bacteria, viruses, parasites, and chemicals.