If the Graph of an Enzyme- Catalyzed Reaction Shows a Sigmoidal

question 120

Multiple Choice

If the graph of an enzyme- catalyzed reaction shows a sigmoidal relationship between substrate concentration and reaction rate, then what can be said about the reaction?

• A)It is endergonic.
• B)It is allosterically regulated.
• C)It is covalently regulated.
• D)It is exergonic.
• E)It is part of an oxidation- reduction process.

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Definitions:

Biological Variation

Differences among individuals and populations in physical, physiological, and genetic characteristics due to evolutionary, environmental, and genetic factors.

Creationism

The belief that the universe and living organisms originate from specific acts of divine creation, as in the biblical account, rather than by natural processes such as evolution.

Evolution

The mechanism through which a range of life forms are considered to have emerged and branched out from previous versions during Earth's historical timeline.

Punctuated Equilibrium

A theory in evolutionary biology which proposes that species evolve rapidly in short bursts, followed by long periods of evolutionary stasis.