Microbiology mcqs with answers pdf
- Clostridium tetani is associated with:
- a) Clostridium difficile
- b) Tetanus
- c) Bacillus cereus
- A common laboratory finding for Gram-positive rods is:
- a) Resistance to all antibiotics
- b) Susceptibility to antibiotics
- c) Lack of endospore formation
- Bacillus cereus is known for:
- a) Causing tetanus
- b) Food poisoning
- c) Forming endospores
- Listeria monocytogenes is a Gram-positive rod associated with:
- a) Urinary tract infections
- b) Foodborne illnesses
- c) Respiratory infections
- Mycobacterium tuberculosis is a notable exception to typical Gram staining due to its:
- a) Lack of a cell wall
- b) Mycolic acid-rich cell wall
- c) Thin peptidoglycan layer
- Streptococcus pyogenes, a Gram-positive rod, is responsible for:
- a) Tuberculosis
- b) Strep throat and skin infections
- c) Food poisoning
- Corynebacterium diphtheriae, a Gram-positive rod, causes:
- a) Meningitis
- b) Diphtheria
- c) Urinary tract infections
- Enterococcus faecalis, a Gram-positive rod, is commonly associated with:
- a) Respiratory infections
- b) Urinary tract infections
- c) Gastrointestinal disorders
- Actinomyces israelii is a Gram-positive rod known for causing:
- a) Tuberculosis
- b) Actinomycosis
- c) Leprosy
- Nocardia asteroides, a Gram-positive rod, is often linked to:
- a) Legionnaires’ disease
- b) Nocardiosis
- c) Lyme disease
- The Gram-positive rod responsible for causing botulism is:
- a) Clostridium perfringens
- b) Clostridium botulinum
- c) Clostridium difficile
- Rhodococcus equi, a Gram-positive rod, is known for causing infections primarily in:
- a) Fish
- b) Horses
- c) Birds
- Propionibacterium acnes, a Gram-positive rod, is commonly associated with:
- a) Dental caries
- b) Acne vulgaris
- c) Meningitis
- The Gram-positive rod associated with gas gangrene is:
- a) Staphylococcus aureus
- b) Clostridium perfringens
- c) Streptococcus pneumoniae
- Bacillus cereus is known for causing food poisoning due to:
- a) Toxin production
- b) Spore contamination
- c) Enzymatic activity
- Mycobacterium leprae, a Gram-positive rod, is responsible for:
- a) Anthrax
- b) Leprosy
- c) Syphilis
- Clostridium difficile, a Gram-positive rod, is commonly associated with:
- a) Tuberculosis
- b) Antibiotic-associated diarrhea
- c) Urinary tract infections
- Gardnerella vaginalis, a Gram-positive rod, is implicated in:
- a) Respiratory infections
- b) Bacterial vaginosis
- c) Gastrointestinal disorders
- Bacillus thuringiensis, a Gram-positive rod, is well-known for its use in:
- a) Antibiotics production
- b) Insecticide production
- c) Vaccine development
- Streptococcus mutans, a Gram-positive rod, plays a crucial role in the development of:
- a) Strep throat
- b) Dental caries
- c) Urinary tract infections
- The Gram-positive rod associated with urinary tract infections in catheterized patients is:
- a) Staphylococcus epidermidis
- b) Enterococcus faecalis
- c) Streptococcus pyogenes
- Bacillus subtilis, a Gram-positive rod, is often used in biotechnology for:
- a) Food preservation
- b) Enzyme production
- c) Antibiotic resistance studies
- Streptococcus pneumoniae, a Gram-positive rod, is a common cause of:
- a) Urinary tract infections
- b) Pneumonia
- c) Gastroenteritis
- The Gram-positive rod associated with “green pus” in skin infections is:
- a) Staphylococcus aureus
- b) Pseudomonas aeruginosa
- c) Escherichia coli
- Propionibacterium acnes, a Gram-positive rod, is implicated in the development of:
- a) Acne vulgaris
- b) Surgical site infections
- c) Tuberculosis
- The Gram-positive rod involved in the fermentation of dairy products is:
- a) Lactobacillus acidophilus
- b) Streptococcus thermophilus
- c) Clostridium botulinum
- Bacillus licheniformis, a Gram-positive rod, is utilized in industrial processes for:
- a) Antibiotic production
- b) Enzyme and detergent production
- c) Vaccine development
- Gram-negative rods are characterized by having:
- a) Thick peptidoglycan layer
- b) Thin peptidoglycan layer
- c) No cell wall
- An example of a Gram-negative rod responsible for urinary tract infections is:
- a) Escherichia coli
- b) Klebsiella pneumoniae
- c) Streptococcus pyogenes
- The Gram-negative rod associated with the causation of whooping cough is:
- a) Bordetella pertussis
- b) Haemophilus influenzae
- c) Neisseria meningitidis
- Which of the following is a characteristic feature of Gram-negative rods in the laboratory setting?
- a) Endospore formation
- b) Lipopolysaccharide (LPS) in the outer membrane
- c) Lack of flagella
- Pseudomonas aeruginosa, a Gram-negative rod, is often associated with:
- a) Dental caries
- b) Nosocomial infections and respiratory infections
- c) Food poisoning
- The Gram-negative rod linked to the causation of bubonic plague is:
- a) Yersinia pestis
- b) Salmonella typhi
- c) Vibrio cholerae
- Escherichia coli, a common Gram-negative rod, is known for its involvement in:
- a) Tuberculosis
- b) Gastrointestinal infections
- c) Urinary tract infections
- The Gram-negative rod associated with Legionnaires’ disease is:
- a) Legionella pneumophila
- b) Francisella tularensis
- c) Burkholderia cepacia
- Klebsiella pneumoniae, a Gram-negative rod, is often responsible for:
- a) Meningitis
- b) Pneumonia and urinary tract infections
- c) Gastroenteritis
- The laboratory finding commonly observed in Gram-negative rods is:
- a) Resistance to all antibiotics
- b) Presence of lipopolysaccharide in the outer membrane
- c) Formation of endospores
- Neisseria gonorrhoeae, a Gram-negative rod, is known for causing:
- a) Respiratory infections
- b) Gonorrhea
- c) Tuberculosis
- The Gram-negative rod associated with foodborne infections from undercooked poultry is:
- a) Campylobacter jejuni
- b) Shigella dysenteriae
- c) Listeria monocytogenes
- Helicobacter pylori, a Gram-negative rod, is implicated in the development of:
- a) Urinary tract infections
- b) Peptic ulcers and gastritis
- c) Meningitis
- Enterobacter aerogenes, a Gram-negative rod, is commonly found in:
- a) Soil
- b) Hospital environments
- c) Dairy products
- The Gram-negative rod associated with the causation of typhoid fever is:
- a) Escherichia coli
- b) Salmonella typhi
- c) Shigella flexneri
- Yersinia enterocolitica, a Gram-negative rod, is linked to infections caused by the consumption of:
- a) Contaminated water
- b) Undercooked pork
- c) Raw seafood
- Acinetobacter baumannii, a Gram-negative rod, is often associated with:
- a) Respiratory infections
- b) Nosocomial infections
- c) Gastroenteritis
- The Gram-negative rod responsible for causing urinary tract infections and pneumonia in immunocompromised individuals is:
- a) Klebsiella pneumoniae
- b) Pseudomonas aeruginosa
- c) Escherichia coli
- Vibrio cholerae, a Gram-negative rod, is known for causing:
- a) Lyme disease
- b) Cholera
- c) Tuberculosis
- Burkholderia cepacia, a Gram-negative rod, is often associated with infections in individuals with:
- a) Intact immune systems
- b) Cystic fibrosis
- c) Diabetes mellitus