Which Statement Regarding the Structure of the Voltage-Gated Na⁺ Channels

question 56

Multiple Choice

Which statement regarding the structure of the voltage-gated Na⁺ channels is false?

• A) P loops mediate ion selectivity.
• B) It has four domains with extensive sequence homology.
• C) The channel protein changes its primary structure in response to membrane depolarization.
• D) A cytoplasmic loop is thought to inactivate the channel by blocking the opening.

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