Why Do Single Channel Measurements of Acetylcholine Receptor Currents Show

question 32

Multiple Choice

Why do single channel measurements of acetylcholine receptor currents show that all channel openings reach the same amplitude?

• A) When the acetylcholine receptor channel is in the open state, the pore conducts the same amount of current due to the permeation properties of that channel.
• B) Acetylcholine receptor channels have the same mean open time.
• C) Acetylcholine receptors bind two molecules of acetylcholine.
• D) Acetylcholine receptor channels have the same probability of opening.
• E) Acetylcholine receptor channels have the same desensitization rate.

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Definitions:

Marginal Cost

The financial increase associated with the generation of one more unit of a product or service.

Average Variable Cost

The variable cost per unit of output, calculated by dividing the total variable costs by the quantity of output produced.

Market Price

The prevailing cost at which a service or product can be acquired or disposed of in a marketplace.

Marginal Cost

The cost of producing one more unit of a good or service, which can vary depending on the level of production.