Podcast
Questions and Answers
Which bacterial species is identified as decarboxylating Lysine?
Which bacterial species is identified as decarboxylating Lysine?
- Enterobacter cloacae
- Enterobacter agglomerans
- Serratia marcescens (correct)
- Klebsiella pneumoniae (correct)
What does a positive result in the PR Sucrose test indicate about a bacteria?
What does a positive result in the PR Sucrose test indicate about a bacteria?
- The bacteria is motile.
- The bacteria cannot decarboxylate Ornithine.
- The bacteria is Gram-negative.
- The bacteria ferments sucrose. (correct)
Which test indicates if an organism ferments glucose and produces hydrogen?
Which test indicates if an organism ferments glucose and produces hydrogen?
- Lysine Decarboxylase
- PR Sucrose
- Motility
- PR Glucose w/ Gas (correct)
Which species shows motility based on the results?
Which species shows motility based on the results?
What does a box filled with a positive sign (+) signify in the results table?
What does a box filled with a positive sign (+) signify in the results table?
Which of the following bacteria is Gram-positive?
Which of the following bacteria is Gram-positive?
What does the variable result (+/-) represent about an organism?
What does the variable result (+/-) represent about an organism?
Which bacterium has a positive result in both the Ornithine Decarboxylase and Motility tests?
Which bacterium has a positive result in both the Ornithine Decarboxylase and Motility tests?
Flashcards
Bacterial Identification Tests
Bacterial Identification Tests
A series of tests used to determine bacterial species based on their biochemical properties.
Lysine Decarboxylase Test
Lysine Decarboxylase Test
A test to determine if a bacterium converts Lysine into a different molecule.
PR Sucrose Test
PR Sucrose Test
Checks if a bacterium can ferment sucrose and produce acid.
Ornithine Decarboxylase Test
Ornithine Decarboxylase Test
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Motility Test
Motility Test
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PR Glucose w/ Gas Test
PR Glucose w/ Gas Test
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Gram-positive/Gram-negative
Gram-positive/Gram-negative
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Biochemical Characteristics
Biochemical Characteristics
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Study Notes
IMViC Results
- IMViC tests are used to identify bacteria based on their metabolic reactions.
Figure 1
-
Lysine Decarboxylase:
- Enterobacter agglomerans group: Negative
- Enterobacter cloacae: Positive
- Enterobacter taylorae: Negative
- Klebsiella pneumoniae: Positive
- Serratia marcescens: Positive
-
PR Sucrose:
- Enterobacter taylorae: Positive
-
Motility:
- Enterobacter agglomerans group: Negative
- Enterobacter cloacae: Negative
- Enterobacter taylorae: Negative
- Klebsiella pneumoniae: Positive
- Serratia marcescens: Positive
-
Ornithine Decarboxylase:
- Enterobacter agglomerans group: Positive
- Enterobacter cloacae: Positive
- Enterobacter taylorae: Negative
-
PR Glucose w/ Gas:
- Enterobacter aerogenes: Positive
- Klebsiella pneumoniae: Negative
- Serratia marcescens: Negative
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