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Microbiology BOC Questions and Answers Already Passed
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Microbiology BOC Questions and Answers Already Passed **Preanalytical and Susceptibility Testing** What is the primary purpose of preanalytical testing? A) To evaluate the patient’s medical history B) To ensure the accuracy and reliability of test results C) To minimize errors before an...

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  • October 16, 2024
  • 257
  • 2024/2025
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Microbiology BOC Questions and
Answers Already Passed
**Preanalytical and Susceptibility Testing**




What is the primary purpose of preanalytical testing?

A) To evaluate the patient’s medical history

B) To ensure the accuracy and reliability of test results


✔✔C) To minimize errors before analysis


D) To interpret laboratory results




Which factor can significantly affect the quality of a specimen?


✔✔A) Improper collection techniques


B) Temperature during storage

C) Timing of sample collection

D) Patient's hydration status




What is the ideal temperature for transporting microbiological specimens?

A) Room temperature

1

,✔✔B) 4°C


C) 20°C

D) -20°C




How often should quality control be performed on susceptibility testing?

A) Weekly


✔✔B) Daily or with each new batch of reagents


C) Monthly

D) Only during audits




What is the purpose of calibrating laboratory equipment?


✔✔A) To ensure accurate measurements


B) To improve the speed of analysis

C) To reduce costs

D) To decrease workload




**Aerobic Gram-Positive Cocci**




2

,Which bacterium is commonly associated with skin infections and is gram-positive?


✔✔A) Staphylococcus aureus


B) Streptococcus pneumoniae

C) Enterococcus faecalis

D) Bacillus cereus




What is the primary distinguishing characteristic of Streptococcus pyogenes?

A) Alpha-hemolytic activity

B) Gram-negative staining


✔✔C) Beta-hemolytic activity


D) Spore formation




Which test can differentiate Staphylococcus aureus from other staphylococci?


✔✔A) Coagulase test


B) Catalase test

C) Oxidase test

D) Urease test




3

, What is the significance of the Lancefield classification?


✔✔A) It categorizes streptococci based on carbohydrate composition


B) It differentiates between various staphylococci

C) It identifies anaerobic bacteria

D) It measures antibiotic susceptibility




What is the primary treatment for infections caused by Streptococcus pneumoniae?

A) Tetracycline

B) Amoxicillin


✔✔C) Penicillin


D) Vancomycin




**Gram-Negative Bacilli**




Which gram-negative bacillus is commonly associated with urinary tract infections?


✔✔A) Escherichia coli


B) Salmonella enterica

C) Proteus mirabilis


4

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