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

What is the cause of trichomoniasis?

  1. Bacteria

  2. Virus

  3. Protozoan

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Trichomoniasis is caused by Trichomonas vaginalis, a protozoan parasite. It is a common sexually transmitted infection. Bacteria cause gonorrhea and syphilis. Viruses cause HIV, herpes, and HPV.

Multiple choice

Which of the following diseases in humans is caused by S. typhimurium?

  1. Typhoid

  2. Typhus fever

  3. Gastroenteritis

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

S. typhimurium causes gastroenteritis in humans. When the bacterial cells enter epithelial cells lining the intestine, they cause host cell ruffling which temporarily damages the microvilli on the surface of the cell. This causes a rush of white blood cells into the mucosa, which throws off the ratios between absorption and secretion and leads to diarrhoea.

Multiple choice

Which of the following are viral diseases?

  1. Ringworm, Candidiasis, Sporotrichosis

  2. Scabies, Pediculosis

  3. Acne, Erysipelas, Folliculitis

  4. Smallpox, Chickenpox, Measles

  5. Tetanus, Botulism
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

These are viral diseases.

Multiple choice

Which of the following is not a cause for the spread of swine flu?

  1. Coughing

  2. Drinking impure water

  3. Sneezing

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Swine flu (H1N1) spreads primarily through respiratory droplets when an infected person coughs or sneezes. Drinking impure water is not a transmission mode for influenza viruses, which is why it's the correct 'not a cause' answer.

Multiple choice

Monodon Baculo Virus (MBV) is a disease specific to

  1. Prawns

  2. Poultry

  3. Silk worms

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

MBV is a viral disease that specifically affects penaeid shrimp (prawns). It does not infect poultry, silk worms, sheep, or other terrestrial animals. The disease impacts the hepatopancreas of shrimp and is significant in aquaculture.

Multiple choice

Which of the following diseases is not sexually transmitted disease?

  1. chancroid

  2. syphilis

  3. gonorrhoea

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

Glossitis is inflammation of the tongue, typically caused by nutritional deficiencies, infections, or irritants. It is not transmitted through sexual contact. Chancroid, syphilis, and gonorrhoea are all sexually transmitted infections caused by bacteria.

Multiple choice

The disease transmitted through sexual contact is _____.

  1. cancer

  2. tuberculosis

  3. diabetes

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

AIDS (Acquired Immunodeficiency Syndrome) is primarily transmitted through sexual contact, along with other modes like blood transfusion and mother-to-child transmission. The other options listed - cancer, tuberculosis, and diabetes - are non-communicable diseases or spread through different routes, not primarily sexual contact.