You Are Examining the DNA Profile of an Unknown Pathogen

question 26

Multiple Choice

You are examining the DNA profile of an unknown pathogen. The pathogen's DNA has been digested with EcoRI restriction enzyme. There are 7 bands on DNA on the gel. Which of the following is NOT true?

• A) The original piece of DNA has seven EcoRI restriction sites.
• B) The original piece of DNA has six EcoRI restriction sites.
• C) The DNA has not been completely restricted.
• D) The restriction enzyme has been denatured.
• E) The restriction enzyme EcoRI was isolated from E. coli.

---

Definitions:

Perfectly Competitive Markets

Markets in which no individual buyer or seller has any significant impact on prices and products are perfect substitutes.

Minimum ATC

The lowest point on the Average Total Cost curve, indicating the most efficient scale of production for a firm in the long run.

Economic Profit

Profits earned by a firm or an individual after subtracting both the explicit costs and opportunity costs of resources employed.

Short Run

A time period in which at least one factor of production is fixed and cannot be changed, contrasting with the long run where all factors are variable.