Use the Information in the Following Paragraph to Answer the Next

question 15

Multiple Choice

Use the information in the following paragraph to answer the next few questions.
A hypothetical bacterium swims among human intestinal contents until it finds a suitable location on the intestinal lining. It adheres to the intestinal lining using a feature that also protects it from phagocytes, bacteriophages, and dehydration. Fecal matter from a human in whose intestine this bacterium lives can spread the bacterium, even after being mixed with water and boiled. The bacterium is not susceptible to the penicillin family of antibiotics. It contains no plasmids and relatively little peptidoglycan.
-This bacterium's ability to survive in a human who is taking penicillin pills may be due to the presence of
1) penicillin-resistance genes
2) a secretory system that removes penicillin from the cell
3) a gram-positive cell wall
4) a gram-negative cell wall
5) an endospore

• A) 1 or 5
• B) 2 or 3
• C) 4 or 5
• D) 2, 3, or 5
• E) 2, 4, or 5

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Definitions:

Unit Elastic

A situation in demand or supply where the elasticity is exactly one, indicating that a change in price results in a proportionate change in the quantity demanded or supplied.

Total Revenue

The total amount of money received by a firm from selling its goods or services.

Price Elastic

Describes how sensitive the demand for a good or service is to changes in its price.

Income Elasticity

A measure of how much the demand for a good or service changes in response to a change in the income of consumers.