Eosin-Methylene Blue Agar, or EMB, Is a Commonly Used Bacteriological

question 60

Multiple Choice

Eosin-methylene blue agar, or EMB, is a commonly used bacteriological medium for growing gram-negative bacteria from complex environments.It contains two dyes, eosin and methylene blue, as well as the sugar lactose.Eosin is a pH indicator that changes color when the medium is acidic, while methylene blue inhibits the growth of most gram-positive bacteria.If an organism consumes lactose, acid will be produced, causing the bacterial colonies to change color. Based upon this description, this medium is ______.

• A)reducing
• B)for enrichment
• C)selective
• D)differential and selective
• E)differential

Recognize applications of operant conditioning in everyday life.

Describe the extinction process and factors influencing it.

Appreciate the role of reinforcement in learning and behavior change.

Understand the concept of shaping and its practical applications.

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Definitions:

Router

A device that routes packets of data between two or more networks.

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P2P Networks

Peer-to-peer networks are decentralized communications models where each party has the same capabilities and either party can initiate a communication session.

Large Numbers

Numerical values that are significantly large in magnitude, often requiring special methods for their computation or representation.