100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
MCB 301: Biochemical Tests Questions and Answers | 100% Pass $9.99   Add to cart

Exam (elaborations)

MCB 301: Biochemical Tests Questions and Answers | 100% Pass

 3 views  0 purchase
  • Course
  • MCB 301
  • Institution
  • MCB 301

MCB 301: Biochemical Tests Questions and Answers | 100% Pass what medium is both selective and differential? - Answer️️ -MacConkey what two components of MacConkey agar inhibit growth of most gram-positive bacteria? - Answer️️ -bile salt and crystal violet what type of medium does not ...

[Show more]

Preview 2 out of 15  pages

  • September 18, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MCB 301
  • MCB 301
avatar-seller
EmillyCharlotte
TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD
OWNER: EMILLYCHARLOTTE
COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISHED: SEPTEMBER 2024

MCB 301: Biochemical Tests Questions
and Answers | 100% Pass

what medium is both selective and differential? - Answer✔️✔️-MacConkey


what two components of MacConkey agar inhibit growth of most gram-positive

bacteria? - Answer✔️✔️-bile salt and crystal violet

what type of medium does not inhibit the growth of bacteria, but differentiates them

based on some visible growth characteristic (ex. colony color)? - Answer✔️✔️-differential

components of MacConkey agar - Answer✔️✔️-lactose, a fermentable carbohydrate, and

the pH indicator neutral red

indicator pH of MacConkey - Answer✔️✔️-6.8 (turns red below)

colonies turn this color on the MacConkey plate if they are unable to ferment lactose -

Answer✔️✔️-colorless or yellow

the MacConkey medium differentiates between which two types of bacteria? -

Answer✔️✔️-lactose-fermenting bacteria and lactose non-fermenters

Score MacConkey plate: Growth occurred and all colonies are noticeably pinkish red.

Acid has been produced - Answer✔️✔️-A

Score MacConkey plate: Growth occurred. Most colonies are colorless, but some look a

little pink/red - Answer✔️✔️-(A)

, TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD
OWNER: EMILLYCHARLOTTE
COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISHED: SEPTEMBER 2024
Score MacConkey plate: Growth occurred and colonies are colorless. No acid has been

produced - Answer✔️✔️-0+

Score MacConkey plate: No growth occurred. Bile salts and crystal violet in the medium

inhibited growth of the organism - Answer✔️✔️-0-

Score Simmon's citrate agar: growth and/or any blue color change in the medium -

Answer✔️✔️-+

Score Simmon's citrate agar: no growth, no color change - Answer✔️✔️--

an organism that scored positive for the simmons citrate test is able to do what? -

Answer✔️✔️-transport citrate across the cell membrane and metabolize

Initial step in reduction of nitrate - Answer✔️✔️-reduction of nitrate (NO3-) TO nitrite

(NO2-)

What products are made from further reduction of nitrite? - Answer✔️✔️-N2, NH3

(ammonia), N2O (nitrous oxide), hydroxylamine

Growth in the presence of oxygen will do what to nitrate reduction? - Answer✔️✔️-

decrease or eliminate nitrate reduction

bacterial oxidation of the citrate anion to carbon dioxide by the TCA cycle releases the

__________ ______, which diplaces the ammonium ion - Answer✔️✔️-sodium cation

what molecule forms in the simmon's citrate medium which raises the pH and turns the

BTB indicator blue? - Answer✔️✔️-ammonium hydroxide

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 EmillyCharlotte. 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.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

81298 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
$9.99
  • (0)
  Add to cart