Author Question: As much as 20 to 40 percent of the energy required by the brain is used by a. sodium-potassium ... (Read 10 times)

fagboi · **on:** Jun 22, 2018

As much as 20 to 40 percent of the energy required by the brain is used by

a. sodium-potassium pumps.
b. calcium pumps.
c. anterograde transport within neurons.
d. retrograde transport within neurons.

Question 2

Ion selectivity is a feature of

a. both ion channels and ion pumps.
b. neither ion channels nor ion pumps.
c. ion channels, but not ion pumps.
d. ion pumps, but not ion channels.