Biology · 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

Which of the following statements relating to infections in the skin is true?

  1. Skin granulomas are rare in Mycobacterium leprae infections.

  2. Human papilloma virus (HPV) is associated with a reactive, non-infective skin rash.

  3. The measles rash is infective.

  4. Recurrent herpes labialis is caused by reactivation of persistent herpes simplex infection often provoked by exposure to UV light.

  5. Atopic individuals have an increased tendency to varicella zoster virus (VZV).
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Reactivation of the persistent HSV infection is probably due to suppression of the skin immune system.

Multiple choice

Directions: Choose the most appropriate answer from the options given below:

The other name of the leprosy?

  1. Henson's disease

  2. Lyme disease

  3. Still's disease

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

Leprosy is also known as Hansen's disease, named after Gerhard Armauer Hansen who discovered the bacterium Mycobacterium leprae in 1873. The term 'Henson's disease' appears to be a misspelling of Hansen's. Lyme disease is tick-borne, Still's disease is juvenile arthritis, and Slim disease refers to AIDS.

Multiple choice

Bacteriophage is a

  1. mycoplasma

  2. virus

  3. rickettisae

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

A bacteriophage is a type of virus that infects and replicates within bacteria.

Multiple choice

Plague is a

  1. bacterial disease

  2. viral disease

  3. mineral deficiency disease

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

Plague is an infectious disease caused by the bacterium Yersinia pestis, which is typically transmitted by fleas.

Multiple choice

UTI's are mainly caused by

  1. Mycobacterium leprae

  2. Shigella dysenteriae

  3. Treponema pallidum

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

Most urinary tract infections (UTIs) are caused by Gram negative bacteria, such as, E. coli. If there is an obstruction of the urethra, catheterization may be needed, but as a general rule, catheterization in cases of UTI is contraindicated, because it can actually introduce pathogens, and make the infection worse. Women tend to acquire more urethral and bladder infections than men, because the opening of the urethra, is closer to the anus.

Multiple choice

Bacteria are the causative organisms for-

  1. Malaria

  2. AIDS

  3. Mumps

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

Tuberculosis is caused by the bacterium Mycobacterium tuberculosis. Malaria is caused by a protozoan (Plasmodium), AIDS by a virus (HIV), and Mumps by a virus.

Multiple choice

Minamata is a disease caused by

  1. Mercury

  2. Coal

  3. Lead

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

Minamata disease is a neurological syndrome caused by severe mercury poisoning, famously discovered in Minamata city in Japan due to industrial wastewater discharge.