During which period of the action potential are K+ ions are moving through a vol
ID: 262780 • Letter: D
Question
During which period of the action potential are K+ ions are moving through a voltage-gated K+ channel?
Question 9 options:
a)
b)
c)
d)
e) K+ ions are constantly moving through a voltage-gated K+ channel.
Suppose you created a genetically engineered octopus that had neurons with voltage-gated Na+ and K+ channels that opened at the same time in response to a change in voltage. How action potentials of those engineered neurons be different that the recording in the diagram?
Question 11 options:
a)
b)
c)
d)
e)
a)
From 5 to the resting potential.b)
From 3 to 5.c)
From 2 to 4.d)
From 1to 3.e) K+ ions are constantly moving through a voltage-gated K+ channel.
Suppose you created a genetically engineered octopus that had neurons with voltage-gated Na+ and K+ channels that opened at the same time in response to a change in voltage. How action potentials of those engineered neurons be different that the recording in the diagram?
Question 11 options:
a)
Threshold values would increase.b)
The “overshoot” would be more pronounced, dipping more below the resting membrane potential line.c)
The period of hyperpolarization would be longer.d)
The peak would occur over a longer period of time.e)
The line from 1-4 would be less curvy, and probably a flat, straight line. +40 3 2 Thrshold of excitation The action potential of a neuron, as recorded using 1 4 -70 Resting potential 5 Mysterious X axis! microelectrodes and a voltage meter, is shown in the figure. Unfortunately, the label for the x-axis is missing. Reference: action potentialExplanation / Answer
1st question : From 3 to 5 ( B )
2nd question : The line from 1-4 would be less curvy and probably a flat , straight line . ( E )
Thats because it is sodium / potassium both going out , so it wont cause the membrane potential change much .
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