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

Which disease is caused by a virus and can cause severe immunosuppression in poultry?

  1. Avian influenza

  2. Newcastle disease

  3. Marek's disease

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

Marek's disease is a highly contagious viral disease that can affect poultry of all ages. It is caused by a herpesvirus and can cause a variety of symptoms, including paralysis, blindness, and immunosuppression.

Multiple choice

What is the most common cause of death in poultry?

  1. Avian influenza

  2. Newcastle disease

  3. Marek's disease

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

Colibacillosis is the most common cause of death in poultry. It is a bacterial infection caused by Escherichia coli and can cause a variety of symptoms, including diarrhea, respiratory problems, and septicemia.

Multiple choice

Which disease is caused by a virus and can cause severe respiratory symptoms in poultry?

  1. Avian influenza

  2. Newcastle disease

  3. Marek's disease

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

Newcastle disease is a highly contagious viral disease that can affect poultry of all ages. It is caused by a paramyxovirus and can cause a variety of symptoms, including respiratory problems, diarrhea, and nervous signs.

Multiple choice

What is the most common cause of lameness in poultry?

  1. Bumblefoot

  2. Marek's disease

  3. Coccidiosis

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

Bumblefoot is a bacterial infection of the foot pad in poultry. It is caused by a variety of bacteria, including Staphylococcus aureus and Escherichia coli, and can cause lameness, swelling, and pain.

Multiple choice

Which of the following is a common type of bacteria that can cause food poisoning from eggs?

  1. Salmonella

  2. E. coli

  3. Listeria

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

Salmonella is a common type of bacteria that can cause food poisoning from eggs.

Multiple choice

Which of the following is a common type of food poisoning that can be caused by eating contaminated eggs?

  1. Salmonella poisoning

  2. E. coli poisoning

  3. Listeria poisoning

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

Salmonella poisoning is a common type of food poisoning that can be caused by eating contaminated eggs.

Multiple choice

Which waterborne disease is caused by the bacterium Vibrio cholerae?

  1. Typhoid

  2. Dysentery

  3. Cholera

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

Cholera is a waterborne disease caused by the bacterium Vibrio cholerae.

Multiple choice

Which waterborne disease is caused by the bacterium Salmonella typhi?

  1. Typhoid

  2. Dysentery

  3. Cholera

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

Typhoid is a waterborne disease caused by the bacterium Salmonella typhi.

Multiple choice

Which waterborne disease is caused by the virus Hepatitis A virus?

  1. Typhoid

  2. Dysentery

  3. Cholera

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

Hepatitis A is a waterborne disease caused by the virus Hepatitis A virus.

Multiple choice

Which waterborne disease is caused by the bacterium Shigella dysenteriae?

  1. Typhoid

  2. Dysentery

  3. Cholera

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

Dysentery is a waterborne disease caused by the bacterium Shigella dysenteriae.

Multiple choice

Which waterborne disease is caused by the protozoan Cryptosporidium parvum?

  1. Cryptosporidiosis

  2. Giardiasis

  3. Amebiasis

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

Cryptosporidiosis is a waterborne disease caused by the protozoan Cryptosporidium parvum.

Multiple choice

Which of the following is NOT a common type of bioprocess contamination?

  1. Bacterial contamination

  2. Viral contamination

  3. Fungal contamination

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

Mycoplasma contamination is not a common type of bioprocess contamination because mycoplasmas are typically found in animal cells, not in microbial cultures.

Multiple choice

What are some common waterborne diseases?

  1. Cholera

  2. Typhoid

  3. Dysentery

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

Cholera, typhoid, and dysentery are all common waterborne diseases that can be transmitted through contaminated water.

Multiple choice

What is the cause of otosclerosis?

  1. A genetic disorder

  2. An autoimmune disorder

  3. A bacterial infection

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

Otosclerosis is a genetic disorder that causes the growth of abnormal bone in the middle ear. This can lead to hearing loss and other problems.

Multiple choice

What is the most common cause of ear infections?

  1. Bacteria

  2. Viruses

  3. Fungi

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

Bacteria are the most common cause of ear infections. These infections can be caused by a variety of bacteria, including Streptococcus pneumoniae, Haemophilus influenzae, and Staphylococcus aureus.