Assume a mutation of the gene coding for the voltage-gated sodium channel resulted in channels that...
Assume a mutation of the gene coding for the voltage-gated sodium channel resulted in channels that do not have the ball and chain part of the protein. Which of the following would you expect to see?
a. A change in the ion selectivity of the channel of the mutated channels, allowing ions other than sodium to move through it.
b. A change in the voltage sensitivity of the channel so that it does not open until more depolarized voltages.
c. An outward flow of sodium ions during the initial part of the action potential.
d. A longer lasting action potential in neurons expressing the mutated channel.
Homework Answers
b. a change in the voltage sensitivity of the channel so that it does not open until more depolarized voltages.
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