A Researcher Wants to Determine Whether a Particular Nerve Specimen

question 43

Multiple Choice

A researcher wants to determine whether a particular nerve specimen communicates via electrical or chemical activity. She places two specimens of the nerves into two containers filled with fluid. She electrically stimulates the first sample and elicits action potentials. She then takes fluid from that container and drips it into the other container containing the second specimen. If the nerve communicates chemically, this specimen should __________.

• A) show no change
• B) also show action potentials
• C) show chemical but not electrical changes
• D) none of the above; she cannot answer her question using this method

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Definitions:

Evergreen

A plant that sheds leaves over a long period, so some leaves are always present. Compare with deciduous.

Glycogen

A multibranched polysaccharide of glucose that serves as a form of energy storage in fungi and animals, including humans.

Cellulose

A long-chain polysaccharide composed of glucose units, forming the primary structural component of plant cell walls and providing rigidity and strength.

Dextrin

A group of low-molecular-weight carbohydrates produced by the hydrolysis of starch, used in various food and industrial applications.