Use the Following to Answer Questions

question 121

Multiple Choice

Use the following to answer questions:
Figure: Producer Surplus
-(Figure: Producer Surplus) In the diagram, if the market price of coffee is $4, how much producer surplus do suppliers earn?

• A) $15
• B) $45
• C) $20
• D) $22.50

---

Definitions:

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that plays an important role in muscle contraction and sensory processing.

Excitatory Neurotransmitter

A type of neurotransmitter that promotes the generation of an electrical signal called an action potential in receiving neurons.

Glutamate

An amino acid that functions as the major excitatory neurotransmitter in the vertebrate brain

All-Or-None Response

The principle that no variation exists in the strength of a single action potential; only a stimulus strong enough to depolarize the membrane to its critical threshold level results in transmission of an action potential.