Bacteriology I MCQs PDF

BACTERIOLOGY I MCQs Here are 50 unique multiple-choice questions based on the provided document: 1. **What are the four main classifications of pathogenic microorganisms?** - A) Bacteria, Viruses, Algae, Parasites - B) Bacteria, Fungi, Protozoa and Helminths, Viruses - C) Bacteria, Fungi, Al...

BACTERIOLOGY I MCQs Here are 50 unique multiple-choice questions based on the provided document: 1. **What are the four main classifications of pathogenic microorganisms?** - A) Bacteria, Viruses, Algae, Parasites - B) Bacteria, Fungi, Protozoa and Helminths, Viruses - C) Bacteria, Fungi, Algae, Viruses - D) Bacteria, Fungi, Protozoa, Algae 2. **Which of the following is true about pathogenic microorganisms?** - A) They cause diseases - B) They do not cause diseases - C) They are part of the normal flora - D) They only cause diseases in animals 3. **How many bacterial species have been identified?** - A) More than 1,000 - B) More than 3,000 - C) More than 5,000 - D) More than 10,000 4. **Which characteristic is NOT used to classify bacteria into different phyla?** - A) Gram stain reaction - B) Cell shape - C) Nutritional and metabolic properties - D) Color 5. **Spirochetes are characterized by their:** - A) Rigid cell walls - B) Helical shape and motility  - C) Spherical shape - D) Immobility 6. **Which bacteria cause syphilis?** - A) Borrelia spp. - B) Leptospira - C) Treponema pallidum - D) Campylobacter jejuni 7. **Which disease is caused by Borrelia spp.?** - A) Syphilis - B) Lyme disease - C) Leptospirosis - D) Gonorrhea 8. **What is the common cause of bacterial food-borne intestinal disease in the United States?** - A) Helicobacter pylori - B) Campylobacter jejuni - C) Pseudomonas aeruginosa - D) Legionella pneumophila 9. **Which bacteria is associated with most gastric ulcers in humans?** - A) Campylobacter fetus - B) Pseudomonas aeruginosa - C) Helicobacter pylori - D) Vibrio cholerae 10. **Which bacteria causes abortions in domestic animals?** - A) Campylobacter jejuni - B) Campylobacter fetus - C) Helicobacter pylori BACTERIOLOGY I MCQs - D) Neisseria meningitidis 11. **Which bacteria is known for causing urinary tract infections and pulmonary infections?** - A) Pseudomonas aeruginosa - B) Legionella pneumophila - C) Bordetella pertussis - D) Neisseria gonorrhea 12. **Legionella pneumophila is commonly found in:** - A) Soil - B) Air conditioning systems - C) Undercooked chicken - D) Human mucous membranes 13. **What disease is caused by Bordetella pertussis?** - A) Pneumonia - B) Whooping cough - C) Meningitis - D) Gonorrhea 14. **Which genus of bacteria is frequently found on human mucous membranes?** - A) Pseudomonas - B) Legionella - C) Neisseria - D) Salmonella 15. **What condition can Neisseria gonorrhea cause in newborns?** - A) Meningitis - B) Pneumonia - C) Neonatal blindness - D) Ear infections 16. **Which genus of bacteria is known for inhabiting the intestinal tracts of animals?** - A) Escherichia - B) Salmonella - C) Shigella - D) Enterobacter 17. **Which bacteria is commonly found in humans and causes urinary tract infections, traveler's diarrhea, and food-borne diseases?** - A) Escherichia coli - B) Salmonella typhi - C) Shigella flexneri - D) Klebsiella pneumoniae 18. **What disease does Salmonella typhi cause?** - A) Typhoid fever - B) Tuberculosis - C) Cholera - D) Dysentery 19. **Which bacteria is the second most common cause of traveler’s diarrhea?** - A) Escherichia coli - B) Shigella - C) Vibrio cholerae - D) Salmonella enteritidis 20. **Which genus of bacteria can cause respiratory and urinary tract infections and is important for nosocomial infections?** - A) Serratia - B) Proteus - C) Yersinia - D) Enterobacter BACTERIOLOGY I MCQs 21. **Yersinia pestis is the causative agent of:** - A) Typhoid fever - B) Bubonic plague - C) Cholera - D) Meningitis 22. **What disease is caused by Vibrio cholerae?** - A) Bubonic plague - B) Typhoid fever - C) Cholera - D) Gonorrhea 23. **Which bacteria cause gastroenteritis and is found in aquatic habitats?** - A) Vibrio cholerae - B) Vibrio parahaemolyticus - C) Campylobacter jejuni - D) Legionella pneumophila 24. **Which genus of bacteria is a pathogen of domestic animals?** - A) Pasteurella - B) Haemophilus - C) Gardnerella - D) Serratia 25. **Which bacteria requires blood in culture and inhabits mucous membranes of the upper respiratory tract?** - A) Haemophilus influenzae - B) Gardnerella vaginalis - C) Pasteurella multocida - D) Legionella pneumophila 26. **What disease does Haemophilus influenzae NOT cause?** - A) Meningitis - B) Bronchitis - C) Arthritis - D) Whooping cough 27. **Which bacteria causes chancroid, a sexually transmitted disease?** - A) Haemophilus influenzae - B) Haemophilus ducreyi - C) Gardnerella vaginalis Here are 50 unique multiple-choice questions based on the provided document: 1. **Which of the following is not a classification of pathogenic microorganisms?** - A) Bacteria - B) Fungi - C) Algae - D) Viruses 2. **What term describes disease-causing microorganisms?** - A) Nonpathogenic - B) Pathogenic - C) Commensal - D) Symbiotic 3. **Approximately how many bacterial species have been classified?** - A) 1,000 - B) 3,000 - C) 5,000 - D) 10,000 BACTERIOLOGY I MCQs 4. **Which of the following is not a criterion for classifying bacteria?** - A) Gram stain reaction - B) Cell shape - C) Oxygen requirements - D) DNA sequence 5. **Which bacteria have a helical shape and move in a corkscrew pattern?** - A) Bacilli - B) Cocci - C) Spirochetes - D) Vibrios 6. **Treponema pallidum causes which disease?** - A) Gonorrhea - B) Lyme disease - C) Syphilis - D) Cholera 7. **What is the primary lesion of syphilis called?** - A) Ulcer - B) Chancre - C) Pustule - D) Blister 8. **Which bacteria is responsible for Lyme disease?** - A) Treponema pallidum - B) Borrelia spp - C) Leptospira - D) Escherichia coli 9. **Which bacteria is associated with undercooked chicken and causes food-borne intestinal disease?** - A) Escherichia coli - B) Campylobacter jejuni - C) Helicobacter pylori - D) Salmonella enteritidis 10. **Which bacteria is most commonly associated with gastric ulcers in humans?** - A) Campylobacter fetus - B) Helicobacter pylori - C) Escherichia coli - D) Salmonella typhi 11. **Campylobacter fetus is known to cause what condition in domestic animals?** - A) Gastroenteritis - B) Abortions - C) Pneumonia - D) Urethritis 12. **Which genus includes bacteria that secrete pigments and have polar flagella?** - A) Pseudomonas - B) Legionella - C) Neisseria - D) Bordetella 13. **Legionella pneumophila is commonly found in all of the following except:** - A) Natural waters - B) Air conditioning systems - C) Soil - D) Humidifiers BACTERIOLOGY I MCQs 14. **Which bacteria causes whooping cough?** - A) Neisseria gonorrhea - B) Bordetella pertussis - C) Pseudomonas aeruginosa - D) Legionella pneumophila 15. **Neisseria gonorrhea is typically found in which part of the human body?** - A) Skin - B) Mucous membranes - C) Blood - D) Bones 16. **Which bacteria is responsible for neonatal blindness (ophthalmia neonatorum)?** - A) Neisseria meningitides - B) Pseudomonas aeruginosa - C) Neisseria gonorrhea - D) Bordetella pertussis 17. **Which genus is not part of the Enterobacteriaceae family?** - A) Escherichia - B) Salmonella - C) Shigella - D) Legionella 18. **What is a common characteristic of bacteria in the Enterobacteriaceae family?** - A) They inhabit the respiratory tract - B) They inhabit the intestinal tracts of animals - C) They are non-motile - D) They do not ferment glucose 19. **Which strain of Escherichia coli is typically not pathogenic?**  - A) E. coli O157:H7 - B) E. coli K12 - C) E. coli O104:H4 - D) E. coli CFT073 20. **Which bacteria causes typhoid fever?** - A) Salmonella typhi - B) Salmonella enteritidis - C) Shigella flexneri - D) Klebsiella pneumoniae 21. **Which genus is only found in humans and causes traveler’s diarrhea?** - A) Salmonella - B) Shigella - C) Escherichia - D) Yersinia 22. **Which bacteria is known for causing respiratory and urinary tract infections and is also antibiotic-resistant?** - A) Klebsiella pneumoniae - B) Escherichia coli - C) Salmonella typhi - D) Shigella flexneri 23. **Which genus causes bubonic plague?** - A) Proteus - B) Serratia - C) Yersinia - D) Enterobacter 24. **Which bacteria is responsible for causing cholera?** BACTERIOLOGY I MCQs - A) Vibrio cholerae - B) Vibrio parahaemolyticus - C) Vibrio vulnificus - D) Vibrio fischeri 25. **Haemophilus influenzae is known to cause all of the following except:** - A) Meningitis - B) Ear infections - C) Bronchitis - D) Typhoid fever 26. **Which genus includes bacteria that require blood in culture?** - A) Vibrio - B) Pasteurella - C) Haemophilus - D) Gardnerella 27. **Which bacteria causes chancroid, a sexually transmitted infection?** - A) Haemophilus influenzae - B) Haemophilus ducreyi - C) Gardnerella vaginalis - D) Neisseria gonorrhea 28. **Which genus is known for causing vaginitis?** - A) Haemophilus - B) Gardnerella - C) Neisseria - D) Bordetella 29. **Rickettsia bacteria are typically transmitted to humans by:** - A) Water  - B) Airborne particles - C) Insects and ticks - D) Direct contact 30. **Which bacteria lives in white blood cells and is part of the genus Ehrlichiae?** - A) Rickettsia conorii - B) Chlamydia trachomatis - C) Chlamydia psittaci - D) Chlamydia pneumoniae 31. **Chlamydia trachomatis is known to cause which condition in humans?** - A) Meningitis - B) Gonorrhea - C) Non-gonococcal urethritis - D) Typhoid fever 32. **Which bacteria causes parrot fever (psittacosis)?** - A) Chlamydia trachomatis - B) Chlamydia psittaci - C) Chlamydia pneumoniae - D) Rickettsia rickettsii 33. **Chlamydia pneumoniae causes which condition in humans?** - A) Severe pneumonia - B) Mild pneumonia - C) Gastroenteritis - D) Tuberculosis 34. **Which bacteria is known to cause severe food-borne disease associated with eggs and meat?** - A) Escherichia coli BACTERIOLOGY I MCQs - B) Salmonella enteritidis - C) Shigella dysenteriae - D) Klebsiella pneumoniae 35. **Which bacteria is an opportunistic pathogen that causes nosocomial infections and produces red pigment?** - A) Serratia marcescens - B) Pseudomonas aeruginosa - C) Proteus mirabilis - D) Yersinia pestis 36. **Which genus of bacteria is highly motile and causes UTIs and wound infections?** - A) Serratia - B) Proteus - C) Klebsiella - D) Enterobacter 37. **Yersinia pestis, the causative agent of bubonic plague, is primarily transmitted by:** - A) Mosquitoes - B) Fleas - C) Ticks - D) Lice 38. **Which bacteria is associated with gastrointestinal disease after consumption of contaminated seafood?** - A) Vibrio cholerae - B) Vibrio parahaemolyticus - C) Campylobacter jejuni - D) Helicobacter pylori 39. **Pasteurella multocida is commonly associated with infections from:** - A) Human bites  - B) Dog and cat bites -C ) Rodent bites - D) Insect bites 40. **Haemophilus influenzae requires which of the following for growth in culture?** - A) Salt - B) Blood - C) Oxygen - D) Light 41. **Which bacteria is a common cause of bacterial vaginosis?** - A) Haemophilus ducreyi - B) Gardnerella vaginalis - C) Neisseria gonorrhea - D) Escherichia coli 42. **Which bacteria are obligate intracellular parasites and can only survive within host cells?** - A) Vibrio - B) Pasteurella - C) Rickettsia - D) Pseudomonas 43. **Which bacteria is transmitted through interpersonal contact and causes the most common sexually transmitted disease?** - A) Chlamydia trachomatis - B) Neisseria gonorrhea - C) Treponema pallidum - D) Gardnerella vaginalis BACTERIOLOGY I MCQs 44. **Which bacteria causes a type of fever known as endemic typhus?** - A) Rickettsia rickettsii - B) Rickettsia prowazekii - C) Rickettsia conorii - D) Rickettsia typhi 45. **Chlamydia trachomatis can cause blindness through which condition?** - A) Keratitis - B) Conjunctivitis - C) Trachoma - D) Blepharitis 46. **Which genus of bacteria is known for causing respiratory infections and is also a significant nosocomial pathogen?** - A) Escherichia - B) Salmonella - C) Klebsiella - D) Shigella 47. **Which bacteria is commonly found in air conditioning systems and can cause pneumonia?** - A) Legionella pneumophila - B) Haemophilus influenzae - C) Bordetella pertussis - D) Neisseria meningitides 48. **The bacteria responsible for gonorrhea can also cause which condition in newborns?** - A) Neonatal sepsis - B) Neonatal blindness - C) Neonatal meningitis - D) Neonatal pneumonia 49. **Which genus includes bacteria that inhabit the mucous membranes of the upper respiratory tract, mouth, vagina, and intestinal tract?** - A) Haemophilus - B) Vibrio - C) Pseudomonas - D) Bordetella 50. **What is the mode of transmission for Chlamydia psittaci?** - A) Airborne respiratory routes - B) Insect bites - C) Contaminated water - D) Direct contact with animals