​Pepsin Is an Enzyme That Functions in the Stomach

question 2

Multiple Choice

​Pepsin is an enzyme that functions in the stomach. Its optimum pH would be ____.

• A) ​between 1 and 2
• B) ​between 3 and 4
• C) ​above 6
• D) ​between 5 and 7.5
• E) ​above 8.5

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Definitions:

Dredged Material

Material that has been removed from the bottom of water bodies to maintain or increase waterway depth for navigation and flood control purposes.

Marketable Discharge Permits

Permits that allow holders to emit a certain amount of pollutants into the environment, which can be bought, sold, or traded, creating an economic incentive for reducing emissions.

Mercury Discharge

The release or emission of mercury, a toxic heavy metal, into the environment, often from industrial sources.

National Environmental Policy Act

A law enacted to ensure that the government gives proper consideration to the environmental impact of major federal actions that could significantly affect the environment.