Which Statement About Voltage-Gated Channels Is True

question 240

Multiple Choice

Which statement about voltage-gated channels is true?

• A) They open or close in response to a change in voltage across the cell membrane.
• B) They all open and close at the same time in response to an action potential.
• C) Ions can move through the channels only if the overall membrane potential stays the same.
• D) Ions are pumped through the channels to maintain the existing membrane potential.
• E) They open only in response to an action potential.

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Definitions:

Anal-retentive Personality

A term derived from Freudian theory indicating a person who is excessively orderly, perfectionistic, and rigid, often stemming from early toilet training experiences.

Anal-expulsive Personality

A psychoanalytic concept that suggests a personality type characterized by messiness, carelessness, and a lack of self-control, believed to originate from certain experiences in early childhood.

Anal-retentive

A term derived from Freudian psychoanalysis referring to an individual who is perceived as excessively neat, precise, and stubborn, often as a result of stringent potty training in the anal stage of development.

Oedipal

Pertaining to the Oedipus complex, a Freudian theory involving a child's unconscious sexual desire for the opposite-sex parent and jealousy towards the same-sex parent.