Which is NOT an example of a graded potential? A) a depolarizing pacemaker poten

Question

Which is NOT an example of a graded potential? A) a depolarizing pacemaker potential B) a depolarizing excitatory postsynaptic potential (EPSP) C) a hyperpolarizing inhibitory postsynaptic potential (IPSP) D) a receptor potential in a sensory- receptor cell E) a depolarizing action potential Which would result from an increase in the extracellular concentration of K^+ above normal? A) The potassium equilibrium potential of nerve cells would become more negative. B) The sodium equilibrium potential would become less positive C) depolarization of resting nerve cells D) hyperpolarization of resting nerve cells The membrane potential of most neurons at rest is: A) more positive than the equilibrium potential for sodium. B) equal to the equilibrium potential for potassium. C) equal to the equilibrium potential for sodium. D) slightly more negative than the equilibrium potential of potassium ion. E) more positive than the equilibrium potential for potassium. Which i

Explanation / Answer

1. A depolarizing pacemaker potential is not an example of graded potential..

Choose option a.

2.option c is the correct answer.

Increase in extracellular potassium concentration causes depolarisation of resting nerve cell.

So choose option c.

3.option e is the correct answer.

Resting neuron potential is more positive than the equilibrium potential of potassium .

So choose option e.

Thank you

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