Describe the factors that contribute to a membrane potential. What is the principle cation inside the cell? Outside the cell?

answer

watching

362

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Casey DurganLv2

28 Sep 2019

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Related questions

Which of the following statements about resting membrane potential is not true? Why?

(a) The resting membrane potential for most animal cells is 0 mV, because the positive and negative ions are in balance.

(b) The resting membrane potential for most animal cells is positive, because Na+ ions are so plentiful inside cells.

(c) The resting membrane potential for most animal cells is negative, because the inside of the cell is more negatively charged than the outside of the cell.

(d) At the resting membrane potential, no ions enter or exit the cell.

lemonllama817

Calculate the maximum [glucose]in/[glucose]out ratio that can beachieved by the plasma membrane Na+-Glucose symporter of anepithelial cell when the concentration of Na+ inside the cell is 2mM, the concentration of Na+ outside the cell is 15 mM, themembrane potential is -70 mV (inside is more negative) andtemperature is 298K. Assume that the Na+ ions are moving fromoutside to the inside of the cell.

mauvecheetah390

For a cell with 120 mM K+, protein- inside, and 4 mM K+ outside, with proteins-impermeable and K+ permeable to the membrane, which of the following statements istrue at equilibrium?a. The chemical potential driving K+ inward is equal in magnitude to the electricalpotential driving potassium outward.

b. Bulk movement of K+ out of the cell occurs due to the impermeable proteins-.

c. The net flux of potassium equals zero.

d. There will be 62 mM K+ protein inside and 62 mM K+ protein outside the cell.

e. The inside of this cell will be electrically positive with respect to the outside.