What Senses Membrane Potential in Voltage-Activated Channels

question 45

Multiple Choice

What senses membrane potential in voltage-activated channels?

• A) Arginine and lysine residues on the S4 transmembrane segment
• B) Glycosylation sites ubiquitous on the α-subunit
• C) Auxiliary β-subunits
• D) The moderately hydrophobic P-loop region
• E) Positively charged residues of the S6 transmembrane segment

---

Definitions:

Price Discrimination

A pricing strategy where different prices are charged for the same product or service in different markets or to different consumers.

Elastic Demand

A situation where the quantity demanded of a product is highly responsive to changes in its price.

Inelastic Demand

The condition when the quantity demanded of a product changes very little in response to changes in its price.

Profit-Maximizing

The approach by which an enterprise figures out the optimal pricing and production levels for the highest profit return.