Questions About Sexually Transmitted Infections (STIs)
Multiple-Choice Questions
Topic: STIs – General, Bacterial, and Viral
1. What does STI stand for?
A) Sterile Tissue Infection
B) Sexually Transmitted Infection
C) Standard Test Infection
D) Sexually Treated Illness
E) Systemic Tissue Illness
2. Which of the following is a bacterial STI?
A) Genital herpes
B) Syphilis
C) HIV
D) HPV
E) Hepatitis B
3. Which virus causes AIDS?
A) HPV
B) HSV
C) HIV
D) HCV
E) CMV
4. What is a common symptom of chlamydia?
A) Always noticeable pain
B) No symptoms in most cases
C) Jaundice
D) Skin rash only
E) Warts
5. Which STI is known for causing genital warts?
A) HIV
B) Chlamydia
C) Gonorrhea
D) HPV
E) Syphilis
6. Which of the following is an incurable viral STI?
A) Gonorrhea
B) Syphilis
C) Chlamydia
D) Herpes
E) Trichomoniasis
7. What is the primary mode of STI transmission?
A) Sharing food
B) Airborne particles
C) Blood transfusion
D) Sexual contact
E) Sneezing
8. Which bacterial STI can be treated with penicillin?
A) HIV
B) HPV
C) Syphilis
D) Hepatitis B
E) Herpes
9. Which STI can progress through primary, secondary, latent, and tertiary stages?
A) HPV
B) Gonorrhea
C) Syphilis
D) Chlamydia
E) Hepatitis C
10. Which STI is often called “the clap”?
A) Chlamydia
B) Trichomoniasis
C) HIV
D) Syphilis
E) Gonorrhea
11. Which of the following STIs is caused by a protozoan?
A) Syphilis
B) HPV
C) Trichomoniasis
D) Herpes
E) HIV
12. Which STI has a vaccine available for prevention?
A) HIV
B) Gonorrhea
C) Herpes
D) HPV
E) Syphilis
13. What is a major symptom of genital herpes?
A) White discharge
B) Painless ulcers
C) Genital blisters
D) Abdominal swelling
E) Warts
14. Untreated chlamydia in women can lead to:
A) Liver failure
B) Pelvic inflammatory disease
C) Neurological damage
D) Heart disease
E) Skin ulcers
15. What type of pathogen causes gonorrhea?
A) Virus
B) Bacteria
C) Fungus
D) Protozoan
E) Prion
16. Hepatitis B can be classified as:
A) Bacterial STI
B) Fungal STI
C) Protozoan STI
D) Viral STI
E) Parasitic STI
17. What is a serious long-term complication of HPV infection?
A) Kidney stones
B) Cervical cancer
C) Infertility
D) Lung infection
E) Heart disease
18. What is a distinguishing feature of secondary syphilis?
A) Genital sores
B) Flu-like symptoms
C) Painless skin rash
D) Memory loss
E) Chronic fatigue
19. The herpes simplex virus type 2 (HSV-2) is commonly associated with:
A) Oral herpes
B) Liver inflammation
C) Genital herpes
D) Eye infections
E) Cervical cancer
20. Which of the following can be transmitted from mother to baby during childbirth?
A) Chlamydia
B) Gonorrhea
C) Herpes
D) All of the above
E) None of the above
21. HIV primarily attacks which type of cells?
A) Red blood cells
B) Platelets
C) CD4 T-cells
D) Liver cells
E) Neurons
22. What does HPV stand for?
A) Human Placental Virus
B) Human Parasite Vector
C) Human Papillomavirus
D) Hepatitis Papule Virus
E) Human Pathogen Variant
23. Which STI often shows no symptoms but can lead to infertility?
A) Chlamydia
B) HPV
C) Herpes
D) HIV
E) Syphilis
24. Condoms are most effective in preventing which types of STIs?
A) All STIs
B) STIs spread by skin contact only
C) Bacterial STIs
D) Bloodborne STIs only
E) STIs spread through air
25. Which STI has a characteristic painless sore (chancre) in its primary stage?
A) Gonorrhea
B) Chlamydia
C) Syphilis
D) HPV
E) Herpes
26. HIV can be transmitted through:
A) Hugging
B) Mosquito bites
C) Sharing toilets
D) Blood, semen, vaginal fluids, breast milk
E) Sneezing
27. The presence of which marker is used to diagnose HIV?
A) CD8 count
B) Antibodies against HIV
C) Insulin level
D) White blood cells
E) Antibodies against HPV
28. Which STI is linked to liver damage and jaundice?
A) Syphilis
B) Gonorrhea
C) Hepatitis B
D) Chlamydia
E) Trichomoniasis
29. What is the best way to prevent all types of STIs?
A) Oral antibiotics
B) Avoiding public toilets
C) Abstinence or safe sex practices
D) Getting vaccinated
E) Daily exercise
30. Which of the following is true about viral STIs?
A) They can be easily cured with antibiotics
B) They never cause symptoms
C) They cannot be transmitted through oral sex
D) They are often incurable but manageable
E) They cause only skin infections
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Answers and Explanations
1. B – STI stands for Sexually Transmitted Infection.
2. B – Syphilis is a bacterial STI caused by Treponema pallidum.
3. C – HIV (Human Immunodeficiency Virus) causes AIDS.
4. B – Chlamydia often shows no symptoms, especially in women.
5. D – HPV (Human Papillomavirus) causes genital warts.
6. D – Herpes (HSV) is a viral STI with no cure.
7. D – Sexual contact is the main route of STI transmission.
8. C – Syphilis is treated with penicillin.
9. C – Syphilis progresses through multiple clinical stages.
10. E – Gonorrhea is commonly called “the clap.”
11. C – Trichomoniasis is caused by a protozoan (Trichomonas vaginalis).
12. D – HPV has a vaccine (e.g., Gardasil) for prevention.
13. C – Herpes causes painful genital blisters.
14. B – Untreated chlamydia can cause pelvic inflammatory disease.
15. B – Gonorrhea is caused by a bacterium (Neisseria gonorrhoeae).
16. D – Hepatitis B is a viral infection affecting the liver.
17. B – HPV is strongly linked to cervical cancer.
18. C – A painless rash is a sign of secondary syphilis.
19. C – HSV-2 usually causes genital herpes.
20. D – All of the listed infections can be transmitted during childbirth.
21. C – HIV attacks CD4 T-cells, weakening the immune system.
22. C – HPV stands for Human Papillomavirus.
23. A – Chlamydia is often asymptomatic and can lead to infertility.
24. C – Condoms are highly effective against bacterial STIs.
25. C – A chancre (painless sore) is the hallmark of primary syphilis.
26. D – HIV spreads through specific body fluids, not casual contact.
27. B – HIV is diagnosed by detecting antibodies against the virus.
28. C – Hepatitis B affects the liver and causes jaundice.
29. C – Abstinence and safe sex are key to STI prevention.
30. D – Viral STIs are often incurable but can be managed with treatment
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