An inhibitory postsynaptic potential occurs when __________.

Fill in the blank(s) with the appropriate word(s).


Answer: binding of the neurotransmitter opens potassium channels, resulting in the membrane becoming hyperpolarized

Biology & Microbiology

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The outside of a neuron is positively charged at resting potential. Why do K+ ions leave the cell when K+ channels open during an action potential?  

A.  The diffusion gradient is the only factor that affects ion movement. B.  K+ ions are actively pumped out by the sodium-potassium pump acting in reverse. C.  Voltage-gated K+ channels open when membrane potential reaches +50 mV during the depolarization phase. The diffusion gradient and electrical force cooperate to drive K+ ions out of the cell. D.  Negatively charged proteins leave the cell at the onset of the action potential.

Biology & Microbiology

How is cell division different in plants versus animal cells?

What will be an ideal response?

Biology & Microbiology

Which region has seen the largest increase in ectotherm metabolic rate?

A) Arctic B) north temperate C) tropical D) south temperate

Biology & Microbiology

An example of a freshwater wetland is an estuary

____________________ Indicate whether the statement is true or false.

Biology & Microbiology