Increases in Cytosolic [Ca²⁺] Can Be Involved in the Signaling

question 7

Multiple Choice

Increases in cytosolic [Ca²⁺] can be involved in the signaling of all of the following EXCEPT

• A) Stimulus-secretion coupling
• B) Excitation-contraction coupling
• C) Excitation-synthesis coupling
• D) Calmodulin-dependent signaling
• E) Direct activation of enzymes

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Definitions:

Sigma Complex

An intermediate in certain chemical reactions characterized by a fully saturated carbon atom bonded to a metal center.

Generic Electrophile

A broadly defined electron-deficient species capable of forming new bonds by accepting a pair of electrons from a nucleophile.

Electrophilic Iodination

A chemical reaction involving the addition of iodine to a substrate via an electrophilic attack.

Aromatic Ring

A stable, planar ring of carbon atoms interconnected by alternating single and double bonds, exhibiting delocalized π-electron cloud.