Biology · 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 most common cause of labyrinthitis?

  1. Viral infection

  2. Bacterial infection

  3. Head injury

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

Viral infection is the most common cause of labyrinthitis, with viruses such as the influenza virus and the herpes simplex virus being the most common culprits.

Multiple choice

What is the most common cause of bacterial labyrinthitis?

  1. Streptococcus pneumoniae

  2. Haemophilus influenzae

  3. Staphylococcus aureus

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

Streptococcus pneumoniae is the most common cause of bacterial labyrinthitis.

Multiple choice

What is the most common complication of bacterial labyrinthitis?

  1. Meningitis

  2. Encephalitis

  3. Stroke

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

Meningitis is the most common complication of bacterial labyrinthitis.

Multiple choice

What was the name of the global pandemic that began in 2020?

  1. The COVID-19 pandemic

  2. The Coronavirus pandemic

  3. The SARS-CoV-2 pandemic

  4. The Wuhan virus pandemic
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The COVID-19 pandemic is a global pandemic of coronavirus disease 2019 (COVID-19), caused by the SARS-CoV-2 virus.

Multiple choice

Which food safety hazard is commonly associated with raw meat and poultry?

  1. Salmonella

  2. E. coli

  3. Listeria monocytogenes

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

Salmonella is a type of bacteria that can cause foodborne illness, commonly associated with raw meat and poultry.

Multiple choice

Which systemic disease is characterized by the presence of oral ulcers, skin lesions, and joint pain?

  1. Behcet's Disease

  2. Lupus Erythematosus

  3. Sjögren's Syndrome

  4. Crohn's Disease
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Behcet's Disease is a chronic multisystemic inflammatory disorder that commonly affects the oral mucosa, skin, and joints.

Multiple choice

Which systemic disease is associated with the development of erythema multiforme?

  1. Herpes Simplex Virus

  2. Systemic Lupus Erythematosus

  3. Pemphigus Vulgaris

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

Erythema multiforme is a skin and mucosal condition that can be triggered by various factors, including Herpes Simplex Virus infection.

Multiple choice

Which systemic disease is characterized by the presence of oral petechiae and ecchymoses?

  1. Thrombocytopenia

  2. Leukemia

  3. Hemophilia

  4. Sickle Cell Anemia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Thrombocytopenia, a condition characterized by low platelet count, can lead to oral petechiae and ecchymoses due to impaired hemostasis.

Multiple choice

Which systemic disease is associated with the development of oral thrush?

  1. HIV Infection

  2. Diabetes Mellitus

  3. Sjögren's Syndrome

  4. Iron Deficiency Anemia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oral thrush, a fungal infection caused by Candida species, is commonly seen in HIV-infected individuals due to impaired immune function.

Multiple choice

Which systemic disease is associated with the development of oral lichenoid lesions?

  1. Hepatitis C

  2. Crohn's Disease

  3. Ulcerative Colitis

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

Oral lichenoid lesions, characterized by white, lace-like lesions on the oral mucosa, can be associated with Hepatitis C infection.

Multiple choice

Which of the following is a type of foodborne illness caused by bacteria?

  1. Salmonella

  2. E. coli

  3. Norovirus

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

Salmonella is a type of bacteria that can cause foodborne illness, leading to symptoms such as diarrhea, vomiting, and abdominal pain.

Multiple choice

Which of the following foodborne pathogens can be effectively controlled by food irradiation?

  1. Salmonella

  2. E. coli

  3. Listeria monocytogenes

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

Food irradiation is effective in controlling a wide range of foodborne pathogens, including Salmonella, E. coli, and Listeria monocytogenes, which are responsible for some of the most common foodborne illnesses.

Multiple choice

Which sexually transmitted infection (STI) is caused by the human papillomavirus (HPV) and can lead to cervical cancer?

  1. Chlamydia

  2. Gonorrhea

  3. Syphilis

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

HPV is the sexually transmitted infection (STI) that is caused by the human papillomavirus (HPV) and can lead to cervical cancer.

Multiple choice

Which of the following is NOT a common travel-related illness?

  1. Diarrhea

  2. Malaria

  3. Altitude sickness

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

The common cold is not typically associated with travel, as it is caused by a virus that is spread through contact with an infected person.

Multiple choice

What is the most common cause of diarrhea in travelers?

  1. Bacteria

  2. Viruses

  3. Parasites

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

Bacteria are the most common cause of diarrhea in travelers, particularly in developing countries where sanitation and hygiene may be poor.