Microbiology Colony Morphology Quiz
18 Questions
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Microbiology Colony Morphology Quiz

Created by
@LongLastingMaple

Questions and Answers

What is the Gram stain result for Aeromonas?

Gram-negative

Which bacterial strain produces smooth, convex, translucent colonies?

C. fetus subsp. fetus

What is the definitive identification test for Campylobacter jejuni?

Positive hippurate hydrolysis test

Which bacterial strain demonstrates 'darting' motility?

<p>Campylobacter</p> Signup and view all the answers

What is the culture medium used for definitive identification of H. pylori?

<p>Christensen’s urea medium at 37°C</p> Signup and view all the answers

Which indirect test can be used to detect the presence of H. pylori?

<p>Urea Breath Test</p> Signup and view all the answers

Which characteristic is unique to Pseudomonas stutzeri for differentiating it from other Pseudomonas species?

<p>Wrinkled, leathery, adherent colonies</p> Signup and view all the answers

What characteristic is common to Pseudomonas mendocina and Pseudomonas pseudoalcaligenes/alciligenes?

<p>Positive for oxidase and ADH</p> Signup and view all the answers

What is a distinguishing feature of Pseudomonas mendocina compared to other Pseudomonas species?

<p>Production of pyoverdine</p> Signup and view all the answers

What property can be used to differentiate Pseudomonas pseudoalcaligenes from other Pseudomonas species?

<p>Weak ferment fructose</p> Signup and view all the answers

Which feature is indicative of Pseudomonas mosellii among the given options?

<p>Optimal growth at 30°C</p> Signup and view all the answers

What characteristic of Pseudomonas nonfluorescent group helps in distinguishing it from other Pseudomonas species?

<p>Light-yellow or brown pigment</p> Signup and view all the answers

What causes urethritis?

<p>Neisseria gonorrhoeae, Chlamydia trachomatis, or Ureaplasma urealyticum</p> Signup and view all the answers

What is the microscopic morphology associated with gonococcal urethritis?

<p>Gram-negative intracellular diplococci</p> Signup and view all the answers

What is the recommended culture medium for identifying Neisseria gonorrhoeae?

<p>Chocolate Agar Plate</p> Signup and view all the answers

Which biochemical test is used for definitive identification of Neisseria gonorrhoeae?

<p>Oxidase Test</p> Signup and view all the answers

What color change indicates a positive result in the oxidase test for Neisseria gonorrhoeae?

<p>Purple within 10 seconds</p> Signup and view all the answers

Which of the following is NOT a recommended specimen for direct microscopic examination?

<p>Pharyngeal swab</p> Signup and view all the answers

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