The Pace of Discovery of New Fossil Hominins Has Accelerated

question 14

Multiple Choice

The pace of discovery of new fossil hominins has accelerated. The text states that this may be attributed to

• A) regional political changes
• B) the better training excavators are receiving
• C) better pay for paleoanthropologists
• D) all of these

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Definitions:

Closed System

An entity that does not exchange energy with its surroundings. Compare with open system.

Noncompetitive Inhibition

The binding of a substance (the noncompetitive inhibitor) to a site other than the active site of an enzyme, thereby lowering the rate at which the enzyme catalyzes a reaction. Compare with competitive inhibition.

Catalysts

Compounds that accelerate the speed of chemical reactions without being used up during the reaction.

Enzyme-Catalyzed Reaction

A chemical reaction that is accelerated by an enzyme, significantly increasing the reaction rate without being consumed in the process.