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
  1. Humans

  2. Plants

  3. Farm animals

  4. All the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anthrax is primarily known as a disease affecting livestock and farm animals such as cattle, sheep, and goats. While it can infect humans (usually through contact with infected animals or their products), the disease is most strongly associated with farm animals in agricultural and veterinary contexts. The question focuses on its primary impact.

Multiple choice
  1. A small zoo

  2. Animal disease that can be transmitted to man

  3. A type of camera

  4. A type of rock

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Zoonosis refers to infectious diseases that can be transmitted from animals to humans. Examples include rabies, avian influenza, and salmonella. These diseases can spread through direct contact with animals, consumption of contaminated animal products, or vectors like ticks and mosquitoes that carry pathogens from animals to humans.

Multiple choice
  1. Athlete's foot

  2. Ringworm

  3. Lockjaw

  4. Tinnitus

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tetanus is also called lockjaw because the bacteria Clostridium tetani releases a toxin that causes severe muscle spasms, particularly in the jaw muscles (masseter muscles), making it difficult or impossible to open the mouth. This condition can be prevented through vaccination and is often associated with contaminated wounds.

Multiple choice
  1. Rubella

  2. Vasculitis

  3. Sciatica

  4. Lumbago

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

German measles is a viral infection also commonly known as Rubella, characterized by a rash and mild fever. It is distinct from standard measles, though both involve rashes.

Multiple choice
  1. Poliomyelitis

  2. Whooping cough

  3. Cholera

  4. Hepatitis

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pertussis, commonly known as whooping cough, is a highly contagious respiratory tract infection caused by Bordetella pertussis bacteria. It's characterized by severe coughing fits followed by a high-pitched 'whoop' sound when inhaling. The disease is particularly dangerous for infants and can be prevented through DTaP vaccination.

Multiple choice
  1. Virus

  2. Bacteria

  3. Parasite

  4. Fungus

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Scabies is caused by the microscopic parasitic mite Sarcoptes scabiei, which burrows into the upper layer of human skin. The female mite lays eggs in these burrows, causing intense itching and a characteristic rash. While fungi cause conditions like ringworm, and viruses/bacteria cause many other diseases, scabies is specifically a parasitic infestation.

Multiple choice
  1. Influenza

  2. Chicken Pox

  3. Tuberculosis

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tuberculosis is caused by the bacterium Mycobacterium tuberculosis. Influenza is caused by the influenza virus, while Chicken Pox is caused by the varicella-zoster virus. TB primarily affects the lungs but can spread to other organs. It's transmitted through airborne droplets and remains a major global health concern.

Multiple choice
  1. kidney

  2. lungs

  3. heart

  4. liver

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The liver is the primary organ responsible for metabolizing alcohol. Excessive alcohol consumption causes fatty liver, alcoholic hepatitis, and eventually cirrhosis - permanent scarring of liver tissue. The liver breaks down alcohol, but this process produces toxic byproducts that damage liver cells over time.

Multiple choice
  1. Tetnus

  2. Pathology

  3. Plantorium

  4. Arpritis

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lockjaw is the common name for tetanus, a serious bacterial infection caused by Clostridium tetani. The infection causes painful muscle spasms, typically starting in the jaw (hence 'lockjaw'), and can spread to other parts of the body. The other options are not medical conditions or are incorrectly spelled.