Certain Drugs Suppress the Activity of the Sympathetic Nervous System,the

question 213

Multiple Choice

Certain drugs suppress the activity of the sympathetic nervous system,the branch of the autonomic nervous system associated with increases in heart rate,respiration,and adrenaline release.If a drug could block this system altogether,William James would predict that:

• A)emotions could not be experienced.
• B)negative-valence emotions could not be experienced.
• C)high-arousal emotions could not be experienced.
• D)the physiological changes accompanying the experienced emotion might be missing.

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Definitions:

Nonsynonymous Mutation

A type of DNA mutation that results in a change in the amino acid sequence of a protein.

Genetic Drift

The process by which allele frequencies in a population change due to chance events, affecting small populations more significantly.

Codon

A sequence of three nucleotides in mRNA that specifies a particular amino acid or termination signal during protein synthesis.

Natural Selection

Natural selection is a mechanism that can lead to adaptive evolution, whereby differences in the phenotypes of individuals cause some of them to survive and reproduce more effectively than others and therefore outcompete them.