Biology ยท Science General

Disease Causative Agents

2,258 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 are the complications of otitis externa?

  1. Spread of infection to the middle ear or mastoid bone

  2. Permanent hearing loss

  3. Facial paralysis

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

Complications of otitis externa can include spread of infection to the middle ear or mastoid bone, permanent hearing loss, and facial paralysis.

Multiple choice

Which of the following is NOT a complication of otitis externa?

  1. Spread of infection to the middle ear or mastoid bone

  2. Permanent hearing loss

  3. Facial paralysis

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

Tinnitus is not a complication of otitis externa. Spread of infection to the middle ear or mastoid bone, permanent hearing loss, and facial paralysis are all complications of otitis externa.

Multiple choice

What is the most common cause of a sore throat?

  1. Bacteria

  2. Virus

  3. Allergies

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

Viral infections, such as the common cold or influenza, are the most common cause of a sore throat.

Multiple choice

Which of the following is a bacterial infection of the throat?

  1. Strep throat

  2. Tonsillitis

  3. Laryngitis

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

Strep throat is a bacterial infection of the throat caused by the bacteria Streptococcus pyogenes.

Multiple choice

How is a sore throat diagnosed?

  1. Physical examination

  2. Throat culture

  3. Rapid strep test

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

A sore throat is diagnosed through a physical examination, throat culture, and rapid strep test.

Multiple choice

What is tonsillitis?

  1. Inflammation of the tonsils

  2. Inflammation of the adenoids

  3. Inflammation of the larynx

  4. Inflammation of the epiglottis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tonsillitis is the inflammation of the tonsils, which are two small masses of tissue at the back of the throat.

Multiple choice

Which virus causes polio?

  1. Poliovirus type 1

  2. Poliovirus type 2

  3. Poliovirus type 3

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

Polio is caused by three types of poliovirus: type 1, type 2, and type 3.

Multiple choice

How is polio transmitted?

  1. Through contact with an infected person's feces

  2. Through contact with an infected person's saliva

  3. Through contact with contaminated food or water

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

Polio is transmitted through contact with an infected person's feces, saliva, or contaminated food or water.

Multiple choice

What is the most common cause of chickenpox?

  1. Varicella-zoster virus

  2. Herpes simplex virus

  3. Epstein-Barr virus

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

Chickenpox is caused by the varicella-zoster virus, which is a member of the herpesvirus family.

Multiple choice

What is the most common cause of rubella?

  1. Rubella virus

  2. Measles virus

  3. Mumps virus

  4. Varicella-zoster virus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rubella is caused by the rubella virus, which is a member of the togavirus family.

Multiple choice

What is the most common cause of hand, foot, and mouth disease?

  1. Coxsackievirus A16

  2. Coxsackievirus A6

  3. Enterovirus 71

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

Hand, foot, and mouth disease is caused by a variety of viruses, including coxsackievirus A16, coxsackievirus A6, and enterovirus 71.

Multiple choice

What is the most common cause of scarlet fever?

  1. Streptococcus pyogenes

  2. Staphylococcus aureus

  3. Escherichia coli

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

Scarlet fever is caused by Streptococcus pyogenes, which is a type of bacteria.

Multiple choice

What is the most common cause of diphtheria?

  1. Corynebacterium diphtheriae

  2. Streptococcus pyogenes

  3. Staphylococcus aureus

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

Diphtheria is caused by Corynebacterium diphtheriae, which is a type of bacteria.

Multiple choice

What is the most common cause of poliomyelitis?

  1. Poliovirus

  2. Coxsackievirus

  3. Echovirus

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

Poliomyelitis is caused by the poliovirus, which is a member of the enterovirus family.

Multiple choice

What is the most common cause of hepatitis B?

  1. Hepatitis B virus

  2. Hepatitis A virus

  3. Hepatitis C virus

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

Hepatitis B is caused by the hepatitis B virus, which is a member of the hepadnavirus family.