100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
BOC Microbiology Revision Exam Questions With Guaranteed Pass Solutions. $9.49   Add to cart

Exam (elaborations)

BOC Microbiology Revision Exam Questions With Guaranteed Pass Solutions.

 4 views  0 purchase
  • Course
  • BOC Microbiology
  • Institution
  • BOC Microbiology

Biochemically, the Enterobacteriaceae are gram negative rods that: - Answer Ferment glucose, reduce nitrate to nitrite, and are oxidase negative. THe ortho-nitrophenyl-Beta-galactopyranoside (ONPG) test is most useful when differentiating: - Answer Shigella spp. from some strains of Escher...

[Show more]

Preview 2 out of 7  pages

  • September 4, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BOC Microbiology
  • BOC Microbiology
avatar-seller
COCOSOLUTIONS
BOC Microbiology Revision Exam
Questions With Guaranteed Pass
Solutions.
Biochemically, the Enterobacteriaceae are gram negative rods that: - Answer Ferment glucose, reduce
nitrate to nitrite, and are oxidase negative.



THe ortho-nitrophenyl-Beta-galactopyranoside (ONPG) test is most useful when differentiating: - Answer
Shigella spp. from some strains of Escherichia coli



The Voges-Proskauer (VP) test detects which end product of glucose fermentation? - Answer Acetoin



At which pH does the methyl red(MR) test become positive? - Answer pH of 4.5



A positive Simmons citrate test is seen as a: - Answer Blue color in the medium after 24 hours of
incubation at 35C



A leg wound culture from a hospitalized 70 year old diabetic man grew motile, lactose-negatvie colonies
on MacConkey agar. Given the following biochemical reactions at 24 hours, what is the most probable
organism:

---------------------------------------------------------------------

H2S neg, TSI neg, Indole neg, DNase pos, urease neg, VP pos, Citrate pos, Phenylalanine deaminase neg,
ornithing and lysine pos, gelatin hydrolysis pos, arginine neg. - Answer Ammonium carbonate



Which reagent is added to detect the production of indole? - Answer p-Dimethylaminobenzaldehyde



Decarboxylation of the amino acids lysine, ornithine, and arginine results in the formation of: - Answer
Amines



Lysine iron agar (LIA) showing a purple slant and blackened butt indicates: - Answer Salmonella spp.

, Putrescine is an alkaline amine product which bacterial enzyme? - Answer Ornithine decarboxylase



Which genera are positive for phenylalanine deaminase?

----Enterobacter, Escherichia, and Salmonella

----Morganella, Providencia, and Proteus

----Klebsiella and Enterobacter

----Proteus, Escherichia, and Shigella - Answer Morganella, Providencia and Proteus



Kligler iron agar (KIA) differs from triple-sugar iron agar (TSI) in the: - Answer The use of sucrose in the
medium



The malonate test is most useful in defferentiating which members of the Enterobacteriaceae? - Answer
Salmonella subgroups 2, and 3 (the former Arizona)



Which genera of the Enterobacteriaceae are known to cause diarrhea and are considered enteric
pathogens? - Answer Escherichia, Salmonella, Shigella, and Yersinia



An isolate of E.coli recovered from the stool of a patient with severe bloody diarrhea should be tested for
which sugar before sending it to a reference laboratory for serotyping? - Answer Sorbitol
(fermentation)



Care must be taken when identifying biochemical isolates of Shigella because serological cross reactions
occur with: - Answer E. coli



Which species of Shigella is most commonly associated with diarrheal disease in the united states? -
Answer S. sonnei



Which of the following tests best differentiates Shigella species from E. coli? - Answer Lactose, indole,
ONPG, and motility (Shigella is negative for all)



Which genera of Enterobacteriaceae ae usually nonmotile at 36C? - Answer Shigella, Klebsiella, and
Yersinia

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 COCOSOLUTIONS. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $9.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

83637 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$9.49
  • (0)
  Add to cart