Q. What is the primary staining method used to differentiate bacteria into Gram-positive and Gram-negative?
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A.
Acid-fast stain
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B.
Gram stain
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C.
Endospore stain
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D.
Capsule stain
Solution
The Gram stain is the primary method used to classify bacteria based on their cell wall composition.
Correct Answer:
B
— Gram stain
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Q. What type of bacteria are characterized by their ability to form endospores?
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A.
Cocci
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B.
Bacilli
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C.
Spirilla
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D.
Vibrios
Solution
Bacilli, such as Bacillus and Clostridium species, are known for their ability to form endospores.
Correct Answer:
B
— Bacilli
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Q. Which bacterium is commonly associated with urinary tract infections?
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A.
Escherichia coli
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B.
Staphylococcus aureus
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C.
Clostridium difficile
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D.
Salmonella enterica
Solution
Escherichia coli is the most common cause of urinary tract infections.
Correct Answer:
A
— Escherichia coli
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Q. Which bacterium is known for causing strep throat?
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A.
Staphylococcus epidermidis
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B.
Streptococcus pyogenes
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C.
Bacillus cereus
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D.
Clostridium perfringens
Solution
Streptococcus pyogenes is the bacterium responsible for strep throat.
Correct Answer:
B
— Streptococcus pyogenes
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Q. Which bacterium is responsible for causing tuberculosis?
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A.
Mycobacterium leprae
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B.
Mycobacterium tuberculosis
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C.
Streptococcus pyogenes
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D.
Neisseria meningitidis
Solution
Mycobacterium tuberculosis is the causative agent of tuberculosis.
Correct Answer:
B
— Mycobacterium tuberculosis
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Q. Which of the following bacteria is a common cause of bacterial meningitis in young adults?
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A.
Neisseria meningitidis
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B.
Streptococcus pneumoniae
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C.
Haemophilus influenzae
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D.
Listeria monocytogenes
Solution
Neisseria meningitidis is a common cause of bacterial meningitis in young adults.
Correct Answer:
A
— Neisseria meningitidis
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Q. Which of the following bacteria is commonly associated with food poisoning from undercooked poultry?
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A.
Escherichia coli
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B.
Salmonella enterica
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C.
Listeria monocytogenes
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D.
Clostridium botulinum
Solution
Salmonella enterica is commonly associated with food poisoning from undercooked poultry.
Correct Answer:
B
— Salmonella enterica
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Q. Which of the following bacteria is known for its characteristic grape-like clusters?
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A.
Streptococcus
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B.
Staphylococcus
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C.
Bacillus
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D.
Corynebacterium
Solution
Staphylococcus species are known for forming clusters that resemble grapes.
Correct Answer:
B
— Staphylococcus
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Q. Which of the following bacteria is known for producing a characteristic green pigment on culture media?
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A.
Pseudomonas aeruginosa
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B.
Klebsiella pneumoniae
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C.
Streptococcus pneumoniae
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D.
Listeria monocytogenes
Solution
Pseudomonas aeruginosa produces a green pigment called pyocyanin on culture media.
Correct Answer:
A
— Pseudomonas aeruginosa
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