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 bacterium is responsible for causing leprosy?

  1. Mycobacterium leprae

  2. Streptococcus pneumoniae

  3. Escherichia coli

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

Mycobacterium leprae is the bacterium responsible for causing leprosy, a chronic infectious disease affecting the skin and nerves.

Multiple choice

Which of the following is a common cause of seborrheic dermatitis in neonates?

  1. Overproduction of sebum

  2. Malassezia yeast infection

  3. Both of the above

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

Seborrheic dermatitis in neonates is caused by a combination of overproduction of sebum and a Malassezia yeast infection.

Multiple choice

Which of the following is NOT a common source of foodborne illness?

  1. Raw or undercooked meat, poultry, and seafood

  2. Unpasteurized milk and dairy products

  3. Fresh fruits and vegetables

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

Fresh fruits and vegetables are generally considered safe to consume when properly cleaned and handled, unlike raw or undercooked animal products, unpasteurized dairy products, and contaminated water, which can harbor harmful microorganisms.

Multiple choice

Which of the following is a common foodborne pathogen that can cause severe illness?

  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

Salmonella, E. coli, and Listeria monocytogenes are all common foodborne pathogens that can cause severe illness, including gastrointestinal symptoms, fever, and even life-threatening complications.

Multiple choice

Which of the following is NOT a common type of foodborne illness caused by bacteria?

  1. Salmonella

  2. E. coli

  3. Norovirus

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

Norovirus is a common type of foodborne illness caused by a virus, not bacteria.

Multiple choice

What is the primary mode of transmission for Hepatitis B?

  1. Blood-to-blood contact

  2. Sexual contact

  3. Airborne transmission

  4. Fecal-oral transmission
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hepatitis B is primarily transmitted through blood-to-blood contact, such as sharing needles or receiving blood transfusions from an infected person.

Multiple choice

Which infectious disease is caused by a bacterium that can be transmitted through contaminated food or water?

  1. Cholera

  2. Typhoid Fever

  3. Dysentery

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

Cholera is an infectious disease caused by the bacterium Vibrio cholerae, which is transmitted through contaminated food or water.

Multiple choice

What is the name of the virus that causes COVID-19?

  1. SARS-CoV-2

  2. MERS-CoV

  3. H1N1

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

COVID-19 is caused by the SARS-CoV-2 virus, which belongs to the family of coronaviruses.

Multiple choice

Which infectious disease is characterized by a high fever, headache, and muscle pain, and is transmitted through mosquito bites?

  1. Dengue

  2. Chikungunya

  3. Yellow Fever

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

Dengue is a mosquito-borne viral infection that causes a high fever, headache, and muscle pain.

Multiple choice

Which infectious disease is caused by a fungus and can affect the lungs, skin, and nails?

  1. Aspergillosis

  2. Candidiasis

  3. Cryptococcosis

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

Aspergillosis is an infection caused by a fungus called Aspergillus, which can affect the lungs, skin, and nails.

Multiple choice

What is the name of the bacterial infection that can cause pneumonia, meningitis, and sepsis?

  1. Streptococcus pneumoniae

  2. Staphylococcus aureus

  3. Escherichia coli

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

Streptococcus pneumoniae is a bacterium that can cause pneumonia, meningitis, and sepsis.

Multiple choice

Which infectious disease is caused by a virus that can cause a rash, fever, and swollen lymph nodes?

  1. Measles

  2. Mumps

  3. Rubella

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

Measles is a highly contagious viral infection that causes a rash, fever, and swollen lymph nodes.

Multiple choice

Which infectious disease is caused by a bacterium that can cause diarrhea, vomiting, and abdominal pain?

  1. Salmonella

  2. E. coli

  3. Shigella

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

Salmonella is a bacterium that can cause diarrhea, vomiting, and abdominal pain.

Multiple choice

Which of the following is a common health concern for newborns?

  1. Jaundice

  2. Pneumonia

  3. Malaria

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

Jaundice is a common health concern for newborns, caused by a buildup of bilirubin in the blood. It can lead to yellowing of the skin and whites of the eyes.

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.