Which two ideas about ion channels of a neuron at its resting potential are true? O ion channels are always closed, but ions move closer to the channels during excitation O ion channels open in response to stimuli and then close simultaneously, in unison O ion channels are always open, but the concentration gradients of ions frequently change O ion channels open and close depending on chemical messengers and are nonspecific as to which ion ca traverse them ion channels open and close depending on stimuli and are specific as to which ion can traverse them
Which two ideas about ion channels of a neuron at its resting potential are true? O ion channels are always closed, but ions move closer to the channels during excitation O ion channels open in response to stimuli and then close simultaneously, in unison O ion channels are always open, but the concentration gradients of ions frequently change O ion channels open and close depending on chemical messengers and are nonspecific as to which ion ca traverse them ion channels open and close depending on stimuli and are specific as to which ion can traverse them
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Which two ideas about ion channels of a neuron at its resting potential are true?
O ion channels are always closed, but ions move closer to the channels during excitation
O ion channels open in response to stimuli and then close simultaneously, in unison
O ion channels are always open, but the concentration gradients of ions frequently change
O ion channels open and close depending on chemical messengers and are nonspecific as to which ion can
traverse them
O ion channels open and close depending on stimuli and are specific as to which ion can traverse them
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