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 waterborne infectious diseases?

  1. Airborne Transmission

  2. Contact Transmission

  3. Waterborne Transmission

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

Waterborne infectious diseases are primarily transmitted through the consumption of contaminated water or food.

Multiple choice

Which of the following is a viral waterborne disease that can cause liver inflammation?

  1. Hepatitis A

  2. Hepatitis B

  3. Hepatitis C

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

Hepatitis A is a viral waterborne disease that primarily affects the liver and can cause symptoms such as jaundice, fatigue, and abdominal pain.

Multiple choice

What is the primary mode of treatment for cholera, a waterborne disease caused by Vibrio cholerae?

  1. Antibiotics

  2. Oral Rehydration Therapy

  3. Intravenous Fluids

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

Treatment for cholera includes antibiotics, oral rehydration therapy, and intravenous fluids to replenish lost fluids and electrolytes.

Multiple choice

Which of the following is a waterborne disease caused by a virus that can cause respiratory symptoms?

  1. Rotavirus

  2. Norovirus

  3. Adenovirus

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

Norovirus is a highly contagious virus that can cause gastroenteritis, characterized by vomiting, diarrhea, and abdominal pain.

Multiple choice

What is the primary mode of transmission for waterborne infectious diseases caused by protozoa?

  1. Airborne Transmission

  2. Contact Transmission

  3. Waterborne Transmission

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

Protozoa, such as Giardia lamblia and Cryptosporidium parvum, are transmitted through the consumption of contaminated water or food.

Multiple choice

Which of the following is a waterborne disease caused by a bacterium that can cause skin and soft tissue infections?

  1. Vibrio vulnificus

  2. Vibrio cholerae

  3. Shigella

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

Vibrio vulnificus is a bacterium that can cause skin and soft tissue infections, particularly in individuals with weakened immune systems.

Multiple choice

What is the primary mode of transmission for waterborne infectious diseases caused by bacteria?

  1. Airborne Transmission

  2. Contact Transmission

  3. Waterborne Transmission

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

Bacteria, such as Vibrio cholerae and Salmonella typhi, are transmitted through the consumption of contaminated water or food.

Multiple choice

What is smallpox?

  1. A highly contagious infectious disease caused by the variola virus

  2. A type of skin cancer

  3. A bacterial infection that causes fever and rash

  4. A respiratory illness caused by a virus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Smallpox is a highly contagious infectious disease caused by the variola virus. It is characterized by a rash of small red bumps that can spread over the entire body.

Multiple choice

How is smallpox transmitted?

  1. Through direct contact with an infected person

  2. Through contact with contaminated objects

  3. Through the air

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

Smallpox can be transmitted through direct contact with an infected person, through contact with contaminated objects, or through the air.

Multiple choice

What is the primary cause of Creutzfeldt-Jakob disease?

  1. Prion protein misfolding

  2. Amyloid plaque accumulation

  3. Tau tangle formation

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

Creutzfeldt-Jakob disease is caused by the misfolding of the prion protein.

Multiple choice

What is the most common type of foodborne illness?

  1. Salmonella

  2. E. coli

  3. Listeria

  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 21 million illnesses in the United States each year.

Multiple choice

What is the leading cause of neonatal diarrhea worldwide?

  1. Rotavirus

  2. Bacteria

  3. Parasites

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

Rotavirus is the most common cause of neonatal diarrhea worldwide, accounting for approximately 40% of cases.

Multiple choice

Which disease is a major concern in the poultry industry, causing significant economic losses?

  1. Avian influenza

  2. Newcastle disease

  3. Marek's disease

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

Avian influenza is a highly contagious viral disease that can cause significant economic losses in the poultry industry due to its potential to spread rapidly and cause high mortality rates.

Multiple choice

The term 'endemic' in the context of diseases refers to:

  1. Diseases that are constantly present in a particular region

  2. Diseases that are rapidly spreading and causing outbreaks

  3. Diseases that are easily transmitted from person to person

  4. Diseases that are fatal and have a high mortality rate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Endemic diseases are those that are consistently present in a specific geographic area, often due to factors like climate, local ecology, or cultural practices.

Multiple choice

Which of the following diseases is NOT primarily transmitted through water?

  1. Cholera

  2. Typhoid Fever

  3. Malaria

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

Malaria is primarily transmitted through the bites of infected mosquitoes, while cholera, typhoid fever, and dysentery are waterborne diseases.