Bacteriology Biochemical Tests Questions and Answers 100% Pass
3 views 0 purchase
Course
Bacteriology Biochemical
Institution
Bacteriology Biochemical
Bacteriology Biochemical Tests
Questions and Answers 100% Pass
What does a positive catalase test indicate?
The presence of catalase enzyme, often found in Staphylococcus species
What is the purpose of the coagulase test in bacteriology?
To differentiate between Staphylococcus aureus (posi...
Bacteriology Biochemical Tests
Questions and Answers 100% Pass
What does a positive catalase test indicate?
✔✔The presence of catalase enzyme, often found in Staphylococcus species
What is the purpose of the coagulase test in bacteriology?
✔✔To differentiate between Staphylococcus aureus (positive) and other Staphylococcus species
(negative)
How is a positive oxidase test result interpreted?
✔✔The presence of cytochrome c oxidase enzyme, typically found in Pseudomonas species
What does a positive urease test indicate?
✔✔The ability of the organism to hydrolyze urea, commonly found in Proteus species
What does a negative indole test result indicate?
✔✔The organism does not produce indole from tryptophan, commonly seen in Enterobacter
species
1
,What is the significance of a positive methyl red test?
✔✔The organism produces mixed acids from glucose fermentation, seen in Escherichia coli
What is the purpose of the Voges-Proskauer test in biochemical testing?
✔✔To detect acetoin production, characteristic of organisms like Enterobacter species
What does a positive citrate test indicate?
✔✔The ability of an organism to use citrate as its sole carbon source, often found in
Enterobacter aerogenes
How is a positive sugar fermentation test result interpreted?
✔✔The organism ferments the sugar, producing acid and sometimes gas, commonly seen in
Escherichia coli
What does a positive H2S (hydrogen sulfide) test indicate?
✔✔The organism produces hydrogen sulfide, typically found in Salmonella and Proteus species
2
, What does a positive decarboxylase test for lysine indicate?
✔✔The organism decarboxylates lysine, producing cadaverine and raising the pH, commonly
found in Enterobacteriaceae
How is a positive phenylalanine deaminase test result interpreted?
✔✔The organism deaminates phenylalanine, producing a green color, commonly seen in Proteus
and Morganella species
What does a positive motility test indicate?
✔✔The organism is motile, moving away from the stab line, characteristic of organisms like
Escherichia coli
What is the significance of a positive nitrate reduction test?
✔✔The organism reduces nitrate to nitrite, which is common in Enterobacteriaceae
What does a negative urease test result indicate?
✔✔The organism does not hydrolyze urea, often seen in Escherichia coli
3
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BrilliantScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
