Exam (elaborations)
Medical Bacteriology Lab Exam 2 with complete solutions
- Course
- Institution
Medical Bacteriology Lab Exam 2 with complete solutions
[Show more]
Content preview
Medical Bacteriology Lab Exam 2 withcomplete solutions
The ONPG test determines the ability for the organism to utilize what sugar? - correct answer
✔✔Lactose
Once acidified, the phenol red indicator in many different medias convert to what color? - correct
answer ✔✔yellow
True or False: Chocolate agar has cocoa powder in it to enhance fastidious organism growth - correct
answer ✔✔False
What is the gram stain and morphology of Neisseria/Moraxella catarrhalis under the microscope? -
correct answer ✔✔gram-negative diplococci
Given the options, which plate should you obtain acolony from when performing the oxidase test?◦ A.
MacConkey◦ B. Nutrient agar - correct answer ✔✔B. nutrient agar
M. catarrhalis was previously placed in a separate genus named what? - correct answer ✔✔Branhamella
What was used to justify inclusion of the species M.catarrhalis in the genus Moraxella? - correct answer
✔✔DNA hybridization studies and 16S rRNAsequence comparisons
Which Neisseria app. is fastidious? - correct answer ✔✔N. gonorrhoeae
What agar is best used to grow N. gonorrhoeae? - correct answer ✔✔Chocolate and MTM agar
In what conditions does N. gonorrheae grow under? How is this achieved in a laboratory setting? -
correct answer ✔✔CO2 and candle jars
, What kind of pathogen is Morexella catarrhalis? - correct answer ✔✔opportunistic
What are two common infections caused by M. catarrhalis? - correct answer ✔✔Otitis media (ear
infection) and upper respiratory infection
How is the shape of M. catarrhalis described? - correct answer ✔✔short gram-negative bacilli
"Picky bugs love chocolate" - correct answer ✔✔fastidious organisms
How is chocolate agar different from blood agar? - correct answer ✔✔Blood cells are cooked/lysed and
have more moisture
Why is chocolate agar used to isolate N. gonorrhoeae, N.meningitidis, Haemophilus influenza? - correct
answer ✔✔These bacteria lack haemolysin and are unable to breakapart the red blood cells and obtain
iron to surviv
What is Modified Thayer-Martin is selective for? - correct answer ✔✔Neisseria spp.
What are the four antibiotics used in MTM agar? And what do they inhibit? - correct answer
✔✔vancomycin: gram positives
colistin: other gram negs
nystatin: yeasts
trimethoprim: Proteus
True or False: All Neisseria's are oxidase positive - correct answer ✔✔True
On a bacticard what does it mean if the IB circle is blue/green? - correct answer ✔✔M. catarrhalis
Bacticard= BGAL circle is blue/green? - correct answer ✔✔N. lactamica
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 BravelRadon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now