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

Communicable diseases are caused by ____________.

  1. allergies

  2. metabolic malfunction

  3. microorganisms

  4. inheritance

  5. addictions
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Communicable diseases are caused by microorganisms. Microorganisms help in spreading a disease, thus making it communicable.

Multiple choice

Oncogenic viruses can cause

  1. cirrhosis

  2. abortion

  3. malignancy

  4. slow reflexes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oncogenic viruses are those which cause cancer or malignancy. E.g. Cancer of the cervix (part of uterus) is mostly caused by Human Papilloma Virus (HPV).

Multiple choice

Which of the following diseases is caused by a virus?

  1. Malaria

  2. Tuberculosis

  3. AIDS

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

AIDS is caused by Human Immunodeficiency Virus (HIV), a retrovirus that attacks the immune system. Malaria is caused by Plasmodium (protozoa), tuberculosis by Mycobacterium (bacteria), and diphtheria by Corynebacterium (bacteria).

Multiple choice

Meningitis is a disease, which affects

  1. liver

  2. heart

  3. brain

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

Meningitis is the inflammation of the meninges, the protective membranes covering the brain and spinal cord. This inflammation primarily affects the central nervous system, with the brain being the main organ impacted. The other options (liver, heart, kidneys) are not directly affected by meningitis.

Multiple choice

Which of the following is the correct group of diseases exclusively caused by virus?

  1. Poliomyelitis, Syphilis, Chickenpox Mumps

  2. Measles, Syphilis, Rabies. Cholera

  3. Cholera, Tuberculosis, Meningitis Syphilis

  4. Measles, Smallpox, Mumps, Rabies
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All four diseases in option D (Measles, Smallpox, Mumps, Rabies) are caused exclusively by viruses. Options A, B, and C incorrectly include bacterial diseases like syphilis, cholera, and tuberculosis which are not viral.