Biology ยท 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

How can waterborne pathogens be transmitted to humans?

  1. Drinking contaminated water

  2. Eating contaminated food

  3. Swimming in contaminated water

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

Waterborne pathogens can be transmitted to humans through drinking contaminated water, eating contaminated food, swimming in contaminated water, or coming into contact with contaminated soil or surfaces.

Multiple choice

Which population is most vulnerable to waterborne illness?

  1. Children

  2. Elderly

  3. People with weakened immune systems

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

Children, the elderly, and people with weakened immune systems are most vulnerable to waterborne illness due to their weaker immune responses.

Multiple choice

What are some common sources of waterborne pathogens?

  1. Sewage

  2. Animal waste

  3. Industrial waste

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

Common sources of waterborne pathogens include sewage, animal waste, industrial waste, and agricultural runoff.

Multiple choice

What are some common waterborne diseases?

  1. Cholera

  2. Typhoid

  3. Dysentery

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

Common waterborne diseases include cholera, typhoid, and dysentery, which are caused by bacteria, viruses, or parasites found in contaminated water.

Multiple choice

Which of the following is an example of a biological cause?

  1. A genetic mutation

  2. A bacterial infection

  3. A change in temperature

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

A genetic mutation is an example of a biological cause, as it can lead to changes in an organism's traits or characteristics.

Multiple choice

Which of the following is an example of a contributory cause in biology?

  1. A genetic mutation

  2. A bacterial infection

  3. A change in temperature

  4. A chemical reaction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A change in temperature can contribute to the development of a disease, but it is not sufficient to cause the disease on its own.

Multiple choice

Which of the following is an example of a contributory cause in biology?

  1. A genetic mutation

  2. A bacterial infection

  3. A change in temperature

  4. A chemical reaction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A change in temperature can contribute to the development of a disease, but it is neither necessary nor sufficient to cause the disease on its own.

Multiple choice

What is the most common cause of impetigo, a contagious skin infection?

  1. Staphylococcus aureus

  2. Streptococcus pyogenes

  3. Candida albicans

  4. Herpes simplex virus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Impetigo is primarily caused by the bacteria Staphylococcus aureus, which can lead to skin infections characterized by blisters and crusting.

Multiple choice

What is the primary cause of warts, small, rough growths on the skin?

  1. Human papillomavirus (HPV)

  2. Bacteria

  3. Fungi

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

Warts are caused by the human papillomavirus (HPV), which can be transmitted through direct contact with an infected person or by touching objects contaminated with the virus.

Multiple choice

What is the most common cause of scabies, an intensely itchy skin condition characterized by tiny burrows and blisters?

  1. Sarcoptes scabiei

  2. Demodex folliculorum

  3. Pediculus humanus capitis

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

Scabies is caused by the mite Sarcoptes scabiei, which burrows into the skin, causing intense itching, blisters, and skin irritation.

Multiple choice

Which skin condition is characterized by the formation of small, fluid-filled blisters on the skin, often accompanied by itching and burning?

  1. Chickenpox

  2. Measles

  3. Mumps

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

Chickenpox is a highly contagious viral infection characterized by the formation of small, fluid-filled blisters on the skin, often accompanied by itching and burning. It is caused by the varicella-zoster virus.

Multiple choice

What is the primary cause of measles, a highly contagious viral infection characterized by a rash, fever, and respiratory symptoms?

  1. Measles virus

  2. Mumps virus

  3. Rubella virus

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

Measles is caused by the measles virus, which is highly contagious and can be spread through respiratory droplets. It is characterized by a rash, fever, and respiratory symptoms such as cough and runny nose.

Multiple choice

What is the primary cause of mumps, a viral infection characterized by swelling of the salivary glands?

  1. Mumps virus

  2. Measles virus

  3. Rubella virus

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

Mumps is caused by the mumps virus, which is highly contagious and can be spread through respiratory droplets. It is characterized by swelling of the salivary glands, fever, and muscle aches.

Multiple choice

What is the primary cause of rubella, a viral infection characterized by a rash, fever, and joint pain?

  1. Rubella virus

  2. Measles virus

  3. Mumps virus

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

Rubella, also known as German measles, is caused by the rubella virus, which is highly contagious and can be spread through respiratory droplets. It is characterized by a rash, fever, and joint pain.

Multiple choice

Which skin condition is characterized by the formation of small, fluid-filled blisters on the skin, often accompanied by itching and burning?

  1. Chickenpox

  2. Measles

  3. Mumps

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

Chickenpox is a highly contagious viral infection characterized by the formation of small, fluid-filled blisters on the skin, often accompanied by itching and burning. It is caused by the varicella-zoster virus.