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

‘Pathogens’ are

  1. Substances produced against any disease causative agent

  2. Chemical substances produced by the host cells to kill the parasite animal

  3. Disease spreading factors

  4. Cells which kill the parasites
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

fact

Multiple choice

Antibodies are

  1. bacteria

  2. viruses

  3. proteins

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

An antibody (Ab), also known as an immunoglobulin (Ig), is a large Y-shaped protein, produced mainly by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses. They are proteinaceous in nature.

Multiple choice

Which of the following is a viral disease?

  1. Cholera

  2. Common cold

  3. Tuberculosis

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

Common cold, also known simply as a cold, is a viral infectious disease of the upper respiratory tract that primarily affects the nose.

Multiple choice

Syphilis is a venereal disease caused by

  1. treponema pallidum

  2. neisseria gonorrhea

  3. waucharia bancrofti

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

Syphilis is a sexually transmitted, infectious disease caused by the spirochete bacterium Treponema pallidum. This bacterium causes infection when it gets into broken skin or mucus membranes, usually of the genitals.

Multiple choice

Which of the following disease-causing organisms multiply slowly?

  1. Worms

  2. Fungi

  3. Bacteria

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

Worms are complex organisms with different tissues, organ system and body design. Also, they multiply by sexual reproduction which requires gamete formation, fertilisation, development, etc. before a new organism is born. Thus, it takes a longer time to produce new individuals that have complex body structures. So, due to the above reasons, the worms multiply slowly.

Multiple choice

What is the immediate cause of an infectious disease?

  1. Microbes

  2. Physical contact

  3. Sexual contact

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

Infectious diseases are named so because they are caused due to “infection” which refers to the invasion by microorganisms. Thus, (1) is the correct answer. 

Multiple choice

Which of the following diseases is transferred through sexual contact?

  1. Tetanus

  2. Diphtheria

  3. Constipation

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

Syphilis is a bacterial disease which spreads through sexual contact. Tetanus (disease in which muscle contracts) and diphtheria are caused due to microbes and spread through air and soil, etc. Constipation (disease in which stools become hard) is an intrinsic disease, which is not spread from one person to the other.