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 microorganism is responsible for the majority of cases of pneumonia?

  1. Streptococcus pneumoniae

  2. Haemophilus influenzae

  3. Mycobacterium tuberculosis

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

Streptococcus pneumoniae is the most common cause of community-acquired pneumonia.

Multiple choice

Which microorganism is responsible for the majority of cases of food poisoning?

  1. Salmonella

  2. Escherichia coli

  3. Campylobacter jejuni

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

Salmonella is the most common cause of food poisoning in the United States.

Multiple choice

Which microorganism is responsible for the majority of cases of meningitis?

  1. Neisseria meningitidis

  2. Streptococcus pneumoniae

  3. Haemophilus influenzae

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

Neisseria meningitidis is the most common cause of bacterial meningitis.

Multiple choice

What is the primary mode of transmission for tuberculosis?

  1. Airborne droplets

  2. Direct contact

  3. Fomite transmission

  4. Vector-borne transmission
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tuberculosis is primarily transmitted through airborne droplets produced when an infected person coughs, sneezes, or talks.

Multiple choice

Which microorganism is responsible for the majority of cases of sexually transmitted infections (STIs)?

  1. Chlamydia trachomatis

  2. Neisseria gonorrhoeae

  3. Syphilis

  4. Human papillomavirus (HPV)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chlamydia trachomatis is the most common cause of STIs in the United States.

Multiple choice

Which of the following is a common cause of pneumonia in children under 5 years old?

  1. Streptococcus pneumoniae

  2. Haemophilus influenzae type b

  3. Respiratory syncytial virus

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

Streptococcus pneumoniae, Haemophilus influenzae type b, and respiratory syncytial virus are all common causes of pneumonia in children under 5 years old.

Multiple choice

Which of the following is a common cause of meningitis in pregnant women?

  1. Streptococcus pneumoniae

  2. Neisseria meningitidis

  3. Listeria monocytogenes

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

Streptococcus pneumoniae, Neisseria meningitidis, and Listeria monocytogenes are all common causes of meningitis in pregnant women.

Multiple choice

Which of the following is a common cause of sepsis in people with chronic health conditions?

  1. Streptococcus pneumoniae

  2. Staphylococcus aureus

  3. Escherichia coli

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

Streptococcus pneumoniae, Staphylococcus aureus, and Escherichia coli are all common causes of sepsis in people with chronic health conditions.

Multiple choice

Which of the following is a common cause of diarrheal disease in children in developing countries?

  1. Rotavirus

  2. Shigella

  3. Escherichia coli

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

Rotavirus, Shigella, and Escherichia coli are all common causes of diarrheal disease in children in developing countries.

Multiple choice

Which of the following is a common cause of sepsis in children in developing countries?

  1. Streptococcus pneumoniae

  2. Staphylococcus aureus

  3. Escherichia coli

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

Streptococcus pneumoniae, Staphylococcus aureus, and Escherichia coli are all common causes of sepsis in children in developing countries.

Multiple choice

Which of the following is NOT a common type of livestock disease?

  1. Mastitis

  2. Foot-and-mouth disease

  3. Avian influenza

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

Heart failure is not typically a common type of livestock disease, as it is more commonly associated with human health.

Multiple choice

Which of the following is NOT a common type of livestock welfare concern?

  1. Overcrowding

  2. Lack of access to food and water

  3. Exposure to extreme temperatures

  4. Inadequate veterinary care
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Inadequate veterinary care is not typically a common type of livestock welfare concern, as it is more commonly associated with human health.

Multiple choice

What is the primary mode of transmission for non-communicable diseases?

  1. Direct contact

  2. Airborne transmission

  3. Vector-borne transmission

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

Non-communicable diseases are not transmitted from person to person. They are caused by a combination of genetic, behavioral, and environmental factors.

Multiple choice

What is the primary cause of tracheitis?

  1. Bacterial infection

  2. Viral infection

  3. Fungal infection

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

Tracheitis can be caused by a variety of microorganisms, including bacteria, viruses, and fungi.

Multiple choice

Which of the following is a common cause of tracheitis in children?

  1. Croup

  2. Epiglottitis

  3. Bacterial infection

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

Croup, epiglottitis, and bacterial infection are all common causes of tracheitis in children.