How Does Nitric Oxide Defy the Traditional Definition of a Neurotransmitter

question 39

Multiple Choice

How does nitric oxide defy the traditional definition of a neurotransmitter?

• A) It forms bonds with several intracellular proteins.
• B) It is not stored in vesicles.
• C) It is regulated by changes in Ca²⁺ levels.
• D) Its synthesis depends upon amino acid precursors.

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Definitions:

External Validity

The extent to which the results of a study can be generalized or applied to other situations or to other people.

Internal Validity

The extent to which an experimental design accurately demonstrates a causal relationship between variables, without influence from external factors.

Causal Relationship

A causal relationship indicates a connection between two variables where changes in the value of one variable are known to cause changes in the value of another variable.

Demand Characteristics

Environmental cues in experiments that might influence participants' behavior or responses, potentially biasing the results.