In a resting neuron:a
the concentration of potassium ions is about 10 times greater inside the cell than in the extracellular fluid.
b. excitatory postsynaptic potentials hyperpolarize the membrane.
c. voltage-activated sodium channels are pumping sodium inside the cell against its concentration gradient.
d. the membrane is more permeable to sodium than potassium ions.
e. inhibitory postsynaptic potentials depolarize the membrane.
a
You might also like to view...
Which of the following does NOT occur during transcriptional regulation in eukaryotes?
A. Chromatin is converted to the closed conformation. B. The gene must be transcribed. C. The RNA must be processed and exported from the nucleus. D. The protein must be made via translation. E. Chromatin is converted to the open conformation.
Short-day plants are those that flower only when the night period of a plant is
A. longer than a defined period. B. shorter than 12 hours.C. followed by short periods of light interruptions. D. less than that in summer. E. longer than 12 hours.
Excess glucose in the human diet can result in
accumulations of a. pyruvate. b. NADH. c. fat. d. lactate. e. ATP.
The egg rolling behavior in the European graylag goose is an example of a motor program
____________________ Indicate whether the statement is true or false.