1. Medical microbiology deals with the study of:
(A) Microbes in soil
(B) Industrial microorganisms
(C) Disease-causing microorganisms
(D) Beneficial microbes
2. Which microorganism causes tuberculosis?
(A) Salmonella typhi
(B) Mycobacterium tuberculosis
(C) Vibrio cholerae
(D) Streptococcus pneumoniae
3. Which bacteria causes cholera?
(A) Shigella dysenteriae
(B) Escherichia coli
(C) Vibrio cholerae
(D) Staphylococcus aureus
4. The causative agent of typhoid fever is:
(A) Vibrio cholerae
(B) Salmonella typhi
(C) Clostridium tetani
(D) Bacillus anthracis
5. Which disease is caused by a virus?
(A) Measles
(B) Malaria
(C) Tuberculosis
(D) Cholera
6. The bacterial shape of Streptococcus is:
(A) Spherical in chains
(B) Spiral
(C) Comma-shaped
(D) Rod-shaped
7. Which microorganism causes malaria?
(A) Trypanosoma
(B) Plasmodium
(C) Entamoeba
(D) Giardia
8. Which disease is caused by Clostridium tetani?
(A) Tetanus
(B) Gas gangrene
(C) Botulism
(D) Diphtheria
9. Which bacterium produces diphtheria toxin?
(A) Bacillus anthracis
(B) Mycobacterium leprae
(C) Corynebacterium diphtheriae
(D) Neisseria gonorrhoeae
10. AIDS is caused by:
(A) Retrovirus
(B) Bacterium
(C) Fungus
(D) DNA virus
11. Which microorganism causes leprosy?
(A) Mycobacterium tuberculosis
(B) Treponema pallidum
(C) Mycobacterium leprae
(D) Neisseria meningitidis
12. Which disease is transmitted by female Anopheles mosquito?
(A) Dengue
(B) Yellow fever
(C) Filariasis
(D) Malaria
13. The causative agent of syphilis is:
(A) Neisseria gonorrhoeae
(B) Haemophilus influenzae
(C) Chlamydia trachomatis
(D) Treponema pallidum
14. Which bacterium causes pneumonia?
(A) Streptococcus pneumoniae
(B) Vibrio cholerae
(C) Salmonella typhi
(D) Shigella dysenteriae
15. Which organism causes amoebic dysentery?
(A) Giardia lamblia
(B) Balantidium coli
(C) Entamoeba histolytica
(D) Plasmodium vivax
16. Which virus causes hepatitis B?
(A) RNA virus
(B) Retrovirus
(C) DNA virus
(D) Bacteriophage
17. Which microorganism causes gonorrhea?
(A) Treponema pallidum
(B) Chlamydia trachomatis
(C) Neisseria gonorrhoeae
(D) Haemophilus ducreyi
18. The causative agent of rabies is:
(A) Bacterium
(B) Protozoa
(C) Virus
(D) Fungus
19. Which bacterium causes anthrax?
(A) Corynebacterium diphtheriae
(B) Bacillus subtilis
(C) Clostridium botulinum
(D) Bacillus anthracis
20. Which disease is caused by fungus?
(A) Typhoid
(B) Ringworm
(C) Polio
(D) Cholera
21. Which organism causes whooping cough?
(A) Mycoplasma pneumoniae
(B) Streptococcus pyogenes
(C) Haemophilus influenzae
(D) Bordetella pertussis
22. Which bacteria lack a cell wall?
(A) Mycobacterium
(B) Mycoplasma
(C) Streptococcus
(D) Staphylococcus
23. Which microorganism causes polio?
(A) Virus
(B) Bacterium
(C) Fungus
(D) Protozoa
24. The causative agent of plague is:
(A) Yersinia pestis
(B) Salmonella typhi
(C) Vibrio cholerae
(D) Bacillus anthracis
25. Which disease spreads through contaminated water?
(A) Tuberculosis
(B) Cholera
(C) Influenza
(D) Rabies
26. Which virus causes influenza?
(A) Orthomyxovirus
(B) Rhinovirus
(C) Adenovirus
(D) Retrovirus
27. Which microorganism causes fungal infection of skin?
(A) Candida
(B) Plasmodium
(C) Entamoeba
(D) Trypanosoma
28. Which disease is known as sleeping sickness?
(A) Malaria
(B) Filariasis
(C) Leishmaniasis
(D) Trypanosomiasis
29. Which bacterium causes food poisoning?
(A) Staphylococcus aureus
(B) Lactobacillus
(C) Rhizobium
(D) Nitrosomonas
30. Which microorganism causes meningitis?
(A) Escherichia coli
(B) Vibrio cholerae
(C) Salmonella typhi
(D) Neisseria meningitidis
31. Which disease is caused by Chlamydia trachomatis?
(A) Diphtheria
(B) Tuberculosis
(C) Leprosy
(D) Trachoma
32. Which parasite causes kala-azar?
(A) Trypanosoma
(B) Plasmodium
(C) Entamoeba
(D) Leishmania donovani
33. Which disease affects peripheral nerves?
(A) Tuberculosis
(B) Cholera
(C) Typhoid
(D) Leprosy
34. Which virus causes chickenpox?
(A) Varicella-zoster virus
(B) Epstein–Barr virus
(C) Influenza virus
(D) Poliovirus
35. Which bacterium is acid-fast?
(A) Mycobacterium tuberculosis
(B) Salmonella typhi
(C) Escherichia coli
(D) Vibrio cholerae
36. Which disease is transmitted by dog bite?
(A) Tetanus
(B) Rabies
(C) Plague
(D) Anthrax
37. Which organism causes botulism?
(A) Clostridium botulinum
(B) Clostridium tetani
(C) Bacillus anthracis
(D) Corynebacterium diphtheriae
38. Which disease is caused by Protozoa?
(A) Polio
(B) Cholera
(C) Malaria
(D) Influenza
39. Which microorganism causes candidiasis?
(A) Fungus
(B) Virus
(C) Bacterium
(D) Protozoa
40. Which test is used to diagnose tuberculosis?
(A) Widal test
(B) VDRL
(C) ELISA
(D) Mantoux test
41. Which disease is sexually transmitted?
(A) Typhoid
(B) Cholera
(C) Tuberculosis
(D) Syphilis
42. Which organism causes dysentery?
(A) Giardia lamblia
(B) Plasmodium vivax
(C) Entamoeba histolytica
(D) Trypanosoma gambiense
43. Which disease is caused by HIV?
(A) Hepatitis
(B) Influenza
(C) AIDS
(D) Polio
44. Which bacteria are gram-positive?
(A) Escherichia coli
(B) Vibrio cholerae
(C) Staphylococcus aureus
(D) Neisseria gonorrhoeae
45. Which virus affects liver cells?
(A) Influenza virus
(B) Measles virus
(C) Polio virus
(D) Hepatitis virus
46. Which disease is caused by Treponema pallidum?
(A) Gonorrhea
(B) Syphilis
(C) Chancroid
(D) AIDS
47. Which microorganism causes dengue fever?
(A) Virus
(B) Protozoa
(C) Fungus
(D) Bacterium
48. Which disease is transmitted by Aedes mosquito?
(A) Malaria
(B) Kala-azar
(C) Filariasis
(D) Dengue
49. Which pathogen causes gas gangrene?
(A) Streptococcus pneumoniae
(B) Bacillus anthracis
(C) Clostridium perfringens
(D) Salmonella typhi
50. Which microorganism causes common cold?
(A) Rhinovirus
(B) Adenovirus
(C) Coronavirus
(D) Influenza virus