Which Statement About Allosteric Control of Enzymatic Activity Is FALSE

question 66

Multiple Choice

Which statement about allosteric control of enzymatic activity is FALSE?

• A) Allosteric effectors give rise to sigmoidal V₀ versus [S] kinetic plots.
• B) Allosteric proteins are generally composed of several subunits.
• C) An effector may either inhibit or activate an enzyme.
• D) Binding of the effector changes the conformation of the enzyme molecule.
• E) Heterotropic allosteric effectors compete with substrate for binding sites.

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Definitions:

Carboxylic Acid

Organic acids characterized by the presence of at least one carboxyl group, which consists of a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group.

Alcohol

A compound containing one or more hydroxyl (OH) groups attached to a carbon atom.

Ester

Organic compounds formed by the reaction of an acid (usually carboxylic acid) with an alcohol, characterized by the functional group -COO-.

Williamson Ether Synthesis

A chemical reaction that synthesizes ethers from alkyl halides and alcohols using a strong base.