Microbiology mcqs with answers pdf chapter 14, Major pathogens and An aerobic bacteria

Here are the important Microbiology mcqs with answers pdf chapter 14 Introduction to anaerobic bacteria.

• What is a major pathogen in microbiology?
  a) Virus
  b) Bacteria
  c) Fungus
  d) All of the above
• Which of the following is considered a major pathogen that causes tuberculosis?
  a) Streptococcus pneumoniae
  b) Escherichia coli
  c) Mycobacterium tuberculosis
  d) Salmonella enterica
• Which virus is responsible for causing the common cold, a major respiratory infection?
  a) Influenza virus
  b) Rhinovirus
  c) Human papillomavirus
  d) Hepatitis B virus
• What is the primary pathogen responsible for causing malaria?
  a) Plasmodium falciparum
  b) Vibrio cholerae
  c) Staphylococcus aureus
  d) Candida albicans

• Which of the following bacteria is a major pathogen responsible for food poisoning?
  a) Listeria monocytogenes
  b) Clostridium botulinum
  c) Campylobacter jejuni
  d) Streptococcus pyogenes
• Which major pathogen is associated with causing the sexually transmitted infection known as syphilis?
  a) Neisseria gonorrhoeae
  b) Treponema pallidum
  c) Chlamydia trachomatis
  d) Haemophilus influenzae
• Which fungal pathogen is responsible for causing athlete’s foot?
  a) Candida albicans
  b) Aspergillus fumigatus
  c) Trichophyton rubrum
  d) Cryptococcus neoformans
• What is the major pathogen associated with the development of dental caries (cavities)?
  a) Streptococcus mutans
  b) Clostridium difficile
  c) Pseudomonas aeruginosa
  d) Bacillus anthracis Answer: a) Streptococcus mutans
• Which virus is considered a major pathogen responsible for causing acquired immunodeficiency syndrome (AIDS)?
  a) Herpes simplex virus
  b) Human papillomavirus
  c) Human immunodeficiency virus (HIV)
  d) Epstein-Barr virus
• Which major pathogen is responsible for causing the majority of urinary tract infections (UTIs)?
  a) Escherichia coli
  b) Salmonella enterica
  c) Staphylococcus aureus
  d) Mycobacterium tuberculosis Answer: a) Escherichia coli
• Which major pathogen is commonly associated with pneumonia in both adults and children?
  a) Streptococcus pyogenes
  b) Haemophilus influenzae
  c) Pseudomonas aeruginosa
  d) Legionella pneumophila
• What is the major pathogen responsible for causing peptic ulcers in the stomach and duodenum?
  a) Streptococcus pneumoniae
  b) Helicobacter pylori
  c) Escherichia coli
  d) Clostridium difficile

• Which virus is a major pathogen associated with causing cervical cancer?
  a) Human papillomavirus (HPV)
  b) Influenza virus
  c) Rotavirus
  d) Measles virus Answer: a) Human papillomavirus (HPV)
• What is the major pathogen responsible for causing strep throat?
  a) Staphylococcus aureus
  b) Streptococcus pneumoniae
  c) Streptococcus pyogenes
  d) Neisseria meningitidis Answer: c) Streptococcus pyogenes
• Which major pathogen is commonly associated with nosocomial (hospital-acquired) infections, including urinary tract infections and bloodstream infections?
  a) Klebsiella pneumoniae
  b) Clostridium difficile
  c) Neisseria gonorrhoeae
  d) Bordetella pertussis Answer: a) Klebsiella pneumoniae
• What is the major pathogen responsible for causing the majority of cases of bacterial meningitis in infants and young children?
  a) Listeria monocytogenes
  b) Neisseria meningitidis
  c) Streptococcus pneumoniae
  d) Haemophilus influenzae type b Answer: d) Haemophilus influenzae type b
• Which major pathogen is associated with causing dental infections and abscesses?
  a) Staphylococcus aureus
  b) Clostridium botulinum
  c) Actinomyces species
  d) Enterococcus faecalis Answer: c) Actinomyces species
• What is the major pathogen responsible for causing the sexually transmitted infection known as gonorrhea?
  a) Treponema pallidum
  b) Neisseria gonorrhoeae
  c) Chlamydia trachomatis
  d) Mycoplasma genitalium Answer: b) Neisseria gonorrhoeae
• Which major pathogen is associated with causing bacterial food poisoning through the production of a toxin in contaminated food?
  a) Salmonella enterica
  b) Vibrio cholerae
  c) Clostridium botulinum
  d) Staphylococcus aureus
• What is the major pathogen responsible for causing the majority of cases of dental cavities in humans?
  a) Candida albicans
  b) Streptococcus mutans
  c) Escherichia coli
  d) Clostridium difficile Answer: b) Streptococcus mutans
• Which type of bacteria requires oxygen for growth and metabolism?
  a) Anaerobic bacteria
  b) Aerobic bacteria
  c) Facultative anaerobes
  d) Obligate intracellular bacteria
• What type of bacteria thrives in the presence of oxygen and utilizes it for respiration?
  a) Anaerobic bacteria
  b) Microaerophilic bacteria
  c) Aerobic bacteria
  d) Facultative anaerobes Answer: c) Aerobic bacteria
• Which of the following bacteria is an example of an aerobic pathogen that causes tuberculosis?
  a) Clostridium difficile
  b) Mycobacterium tuberculosis
  c) Escherichia coli
  d) Streptococcus pyogenes Answer: b) Mycobacterium tuberculosis
• Which aerobic bacterium is commonly found in soil and is used for the production of antibiotics like streptomycin?
  a) Staphylococcus aureus
  b) Pseudomonas aeruginosa
  c) Mycobacterium leprae
  d) Streptomyces griseus Answer: d) Streptomyces griseus
• What is a well-known aerobic bacterium involved in the decomposition of organic matter in the environment?
  a) Clostridium perfringens
  b) Bacillus anthracis
  c) Escherichia coli
  d) Pseudomonas putida Answer: d) Pseudomonas putida
• Which aerobic bacterium is commonly associated with urinary tract infections?
  a) Staphylococcus epidermidis
  b) Proteus mirabilis
  c) Clostridium difficile
  d) Mycoplasma pneumoniae Answer: b) Proteus mirabilis
• Which aerobic bacterium is responsible for causing whooping cough (pertussis)?
  a) Bordetella pertussis
  b) Clostridium tetani
  c) Salmonella enterica
  d) Neisseria meningitidis Answer: a) Bordetella pertussis
• Which aerobic bacterium is commonly associated with respiratory infections and pneumonia in immunocompromised individuals?
  a) Clostridium botulinum
  b) Mycoplasma pneumoniae
  c) Streptococcus mutans
  d) Escherichia coli Answer: b) Mycoplasma pneumoniae
• What aerobic bacterium is often found in water and can cause infections in wounds or via ingestion of contaminated water?
  a) Legionella pneumophila
  b) Clostridium difficile
  c) Listeria monocytogenes
  d) Mycobacterium leprae Answer: a) Legionella pneumophila
• Which aerobic bacterium is associated with the production of greenish-blue pigment and is found in burn wounds?
  a) Staphylococcus aureus
  b) Escherichia coli
  c) Pseudomonas aeruginosa
  d) Clostridium perfringens Answer: c) Pseudomonas aeruginosa
• What aerobic bacterium is commonly used in the dairy industry to produce yogurt and cheese?
  a) Lactobacillus acidophilus
  b) Clostridium botulinum
  c) Mycobacterium tuberculosis
  d) Escherichia coli Answer: a) Lactobacillus acidophilus
• Which aerobic bacterium is responsible for causing infections in the respiratory tract, particularly in individuals with cystic fibrosis?
  a) Mycobacterium leprae
  b) Streptococcus pneumoniae
  c) Pseudomonas aeruginosa
  d) Clostridium difficile Answer: c) Pseudomonas aeruginosa
• Which aerobic bacterium is associated with dental plaque formation and gum disease?
  a) Clostridium perfringens
  b) Streptococcus mutans
  c) Listeria monocytogenes
  d) Escherichia coli Answer: b) Streptococcus mutans
• What aerobic bacterium is known for its involvement in causing stomach ulcers?
  a) Helicobacter pylori
  b) Clostridium difficile
  c) Salmonella enterica
  d) Mycobacterium tuberculosis Answer: a) Helicobacter pylori
• Which aerobic bacterium is a common inhabitant of the human skin and is associated with skin infections?
  a) Staphylococcus epidermidis
  b) Streptococcus pyogenes
  c) Clostridium tetani
  d) Mycoplasma pneumoniae Answer: a) Staphylococcus epidermidis
• What is the primary aerobic bacterium responsible for causing Lyme disease?
  a) Treponema pallidum
  b) Borrelia burgdorferi
  c) Chlamydia trachomatis
  d) Neisseria gonorrhoeae Answer: b) Borrelia burgdorferi
• Which aerobic bacterium is a common cause of urinary tract infections in women?
  a) Staphylococcus aureus
  b) Clostridium difficile
  c) Escherichia coli
  d) Mycobacterium leprae Answer: c) Escherichia coli
• What is a notable aerobic bacterium used in biotechnology for genetic engineering and producing insulin?
  a) Clostridium botulinum
  b) Escherichia coli
  c) Mycobacterium tuberculosis
  d) Streptococcus mutans Answer: b) Escherichia coli

• Which aerobic bacterium is commonly found in the intestines of animals and can cause foodborne illnesses in humans?
  a) Clostridium perfringens
  b) Salmonella enterica
  c) Listeria monocytogenes
  d) Mycobacterium leprae Answer: b) Salmonella enterica
• What is the major aerobic bacterium responsible for causing bacterial vaginosis in women?
  a) Gardnerella vaginalis
  b) Clostridium difficile
  c) Streptococcus pneumoniae
  d) Neisseria gonorrhoeae Answer: a) Gardnerella vaginalis