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

Disease can be called as

  1. ailment

  2. sickness

  3. illness

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

Ailment, sickness, and illness are all synonyms for disease.

Multiple choice

Infective agents are

  1. virus

  2. worms

  3. bacteria

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

Viruses, bacteria, and worms are all biological agents that can cause infectious diseases.

Multiple choice

Pathogenic means

  1. medicine.

  2. treatment.

  3. disease causing factors.

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

The term pathogenic is derived from 'pathogen', which refers to any organism or agent that causes disease. Options like medicine or microbes are related but do not define the term itself.

Multiple choice

Diseases communicated from one person to another are known as

  1. infectious

  2. non-infectious

  3. congenital

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Infectious diseases are those that can be transmitted from one person to another, often through pathogens like bacteria or viruses. Non-infectious diseases are not communicable.

Multiple choice

Find the odd one:

  1. Bacteria

  2. Virus

  3. Fungi

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

Bacteria, viruses, and fungi are microorganisms (pathogens), whereas worms are multicellular parasites (helminths), making them the odd one out in a microbiological context.

Multiple choice

Find the odd one:

  1. Common cold

  2. AIDS

  3. Pneumonia

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

Common cold, pneumonia, and tuberculosis are typically caused by pathogens that can be transmitted through respiratory droplets or air, whereas AIDS is transmitted through specific bodily fluids, making it the odd one out.

Multiple choice

Cholera is a/an ________ disease.

  1. air borne

  2. water borne

  3. Both 1 and 2

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

Cholera is caused by the bacterium Vibrio cholerae and is primarily transmitted through contaminated water, classifying it as a water-borne disease.

Multiple choice

Common cold is a/an

  1. communicable disease

  2. non communicable disease

  3. acute disease

  4. Both 1 and 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The common cold is a communicable disease (spreads through droplets) and is also an acute disease (short duration), making both 1 and 3 correct.

Multiple choice

Tuberculosis is a/an _________ disease.

  1. air borne

  2. communicable

  3. Both 1 and 2

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

Tuberculosis is caused by bacteria that spread through the air when an infected person coughs or sneezes. Because it can be transmitted from person to person, it is classified as a communicable disease.

Multiple choice

Japanese encephalitis is commonly known as

  1. brain fever

  2. brain tumor

  3. cancer

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Japanese encephalitis is a viral infection that causes inflammation of the brain, leading to symptoms like high fever, headache, and confusion. It is colloquially referred to as brain fever.

Multiple choice

Common cold is a _________ disease

  1. acute

  2. chronic

  3. normal

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

An acute disease is one that appears suddenly and lasts for a short period. The common cold fits this definition perfectly.

Multiple choice

Infectious diseases are caused by ____________.

  1. microbes

  2. insects

  3. obesity

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

Infectious diseases are caused by pathogens, which are biological organisms such as bacteria, viruses, fungi, and protozoa, collectively referred to as microbes.

Multiple choice

Loose motions is an infection with a __________.

  1. virus

  2. bacteria

  3. insect

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

Loose motions is most commonly caused by viral infections, particularly rotavirus, norovirus, and other enteric viruses. While bacteria can also cause diarrhea, viral infections are the predominant cause, especially in children.