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 of the following is a common cause of meningitis in children?

  1. Streptococcus pneumoniae

  2. Neisseria meningitidis

  3. Haemophilus influenzae type b

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

Streptococcus pneumoniae, Neisseria meningitidis, Haemophilus influenzae type b, and Listeria monocytogenes are all common causes of meningitis in children.

Multiple choice

What is the most common cause of infectious diarrhea worldwide?

  1. Rotavirus

  2. Shigella

  3. Escherichia coli

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

Rotavirus is the most common cause of infectious diarrhea worldwide, particularly in young children.

Multiple choice

Which of the following is a bacterial cause of gastroenteritis?

  1. Norovirus

  2. Clostridium difficile

  3. Giardia lamblia

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

Clostridium difficile is a bacterial cause of gastroenteritis, often associated with antibiotic use.

Multiple choice

What is the primary mode of transmission for Shigella?

  1. Fecal-oral route

  2. Waterborne transmission

  3. Foodborne transmission

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

Shigella is primarily transmitted through the fecal-oral route, often due to poor sanitation and hygiene practices.

Multiple choice

Which of the following is a protozoan cause of gastroenteritis?

  1. Vibrio cholerae

  2. Entamoeba histolytica

  3. Campylobacter jejuni

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

Entamoeba histolytica is a protozoan cause of gastroenteritis, commonly known as amoebiasis.

Multiple choice

Which of the following is a viral cause of gastroenteritis?

  1. Escherichia coli

  2. Norovirus

  3. Shigella

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

Norovirus is a common viral cause of gastroenteritis, often associated with outbreaks in healthcare facilities and cruise ships.

Multiple choice

Which of the following is a bacterial cause of food poisoning?

  1. Staphylococcus aureus

  2. Salmonella

  3. Clostridium botulinum

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

Staphylococcus aureus is a common cause of food poisoning, often associated with improperly handled or stored food.

Multiple choice

Which of the following is a bacterial cause of traveler's diarrhea?

  1. Escherichia coli

  2. Shigella

  3. Salmonella

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

Escherichia coli, particularly certain strains like enterotoxigenic E. coli (ETEC), is a common cause of traveler's diarrhea.

Multiple choice

Which of the following is a viral cause of food poisoning?

  1. Hepatitis A virus

  2. Norovirus

  3. Rotavirus

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

Hepatitis A virus is a common cause of food poisoning, often associated with contaminated food or water.

Multiple choice

What is the primary mode of transmission for Yersinia enterocolitica?

  1. Fecal-oral route

  2. Waterborne transmission

  3. Foodborne transmission

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

Yersinia enterocolitica is primarily transmitted through foodborne transmission, often associated with contaminated meat or dairy products.

Multiple choice

Which of the following is a protozoan cause of food poisoning?

  1. Toxoplasma gondii

  2. Entamoeba histolytica

  3. Giardia lamblia

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

Entamoeba histolytica can cause food poisoning, particularly when contaminated food or water is consumed.

Multiple choice

What is the most common type of meningitis in neonates?

  1. Bacterial meningitis

  2. Viral meningitis

  3. Fungal meningitis

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

Bacterial meningitis is the most common type of meningitis in neonates.

Multiple choice

Which of the following is a common cause of neonatal pneumonia?

  1. Streptococcus pneumoniae

  2. Haemophilus influenzae

  3. Staphylococcus aureus

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

Streptococcus pneumoniae, Haemophilus influenzae, and Staphylococcus aureus are all common causes of neonatal pneumonia.

Multiple choice

Which of the following is a risk factor for neonatal meningitis?

  1. Premature birth

  2. Low birth weight

  3. Maternal infection

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

Premature birth, low birth weight, and maternal infection are all risk factors for neonatal meningitis.

Multiple choice

Which of the following is NOT a common zoonotic disease?

  1. Rabies

  2. Influenza

  3. Tuberculosis

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

Influenza is a respiratory illness caused by viruses that primarily affect humans. While some strains of influenza can infect animals, they are not typically considered zoonotic diseases, which are diseases that can be transmitted from animals to humans.