Sexually Transmitted Diseases

Sexually Transmitted Diseases MDCAT MCQs with answers

11 past paper MCQs on Sexually Transmitted Diseases, from the Reproduction unit of MDCAT Biology. The year each question appeared is shown where known; tap “Show answer” for the correct option and a short solution.

Read the notes first Practise the unit as a quiz

1.The major source of transmission of syphilis is: (MDCAT 2022)

  1. blood transfusion
  2. insect bite
  3. contaminated water
  4. sexual contact
Show answer

Correct answer: (d) sexual contact

Syphilis is a sexually transmitted disease caused by Treponema pallidum.

2.The bacterium Treponema Pallidum is responsible for which sexually transmitted disease? (UHS MDCAT 2025)

  1. Syphilis
  2. Chlamydia
  3. Gonorrhea
  4. Genital herpes
Show answer

Correct answer: (a) Syphilis

Syphilis is caused by the spirochaete Treponema pallidum.

3.Syphilis is caused by what kind of bacteria: (KMU MDCAT 2025)

  1. Spirochaete
  2. Cocci
  3. Bacillus
  4. Vibrio
Show answer

Correct answer: (a) Spirochaete

Treponema pallidum is a spiral bacterium, that is, a spirochaete.

4.Which of the following is the sexually transmitted disease? (SIBA MDCAT 2025)

  1. Syphilis
  2. Lung Cancer
  3. Tuberculosis
  4. Autoimmune disorders
Show answer

Correct answer: (a) Syphilis

Syphilis passes by sexual contact; the others do not.

5.____ is spread through sexual contact. (KMU MDCAT 2024)

  1. Gonorrhoea
  2. Influenza
  3. Tuberculosis
  4. Typhoid
Show answer

Correct answer: (a) Gonorrhoea

Gonorrhoea is caused by Neisseria gonorrhoeae and passes by sexual contact.

6.Major source of transmission of syphilis is: (UHS MDCAT 2023)

  1. Blood transfusion
  2. Insect bite
  3. Contaminated water
  4. Sexual contact
Show answer

Correct answer: (d) Sexual contact

Syphilis is spread by sexual contact with an infected person.

7.Which of the following is a typical symptom of AIDS? (PMC MDCAT 2022)

  1. Sudden weight loss
  2. Active immune function
  3. Vision impairment
  4. Kaposi's sarcoma, a rare form of skin cancer
Show answer

Correct answer: (a) Sudden weight loss

Rapid unexplained weight loss is one of the first signs as the immune system fails.

8.How can syphilis be transferred? (PMC MDCAT 2022)

  1. Sexual transmission
  2. Fecal oral
  3. Respiratory droplets
  4. Injection
Show answer

Correct answer: (a) Sexual transmission

Syphilis passes by sexual contact with an infected person.

9.Which of the following diseases is sexually transmitted? (PMC MDCAT 2020)

  1. Tuberculosis
  2. AIDS
  3. Dengue Fever
  4. Cholera
Show answer

Correct answer: (b) AIDS

AIDS is passed by sexual contact as well as by blood.

10.Transmission of Neisseria gonorrhea is best described by which one of the following? (UHS MDCAT 2016)

  1. Oro-fecal Route
  2. Unsafe Sex
  3. Vector Borne
  4. Droplet Infection
Show answer

Correct answer: (b) Unsafe Sex

Gonorrhoea is passed by sexual contact.

11.Syphilis, sexually transmitted disease is caused by: (UHS MDCAT 2015)

  1. HIV
  2. Treponema pallidum
  3. Neisseria gonorhoeae
  4. Type ‘2’ virus
Show answer

Correct answer: (b) Treponema pallidum

Syphilis is caused by Treponema pallidum.

More in Reproduction