Why do ions have difficulty moving through the cellular

Last updated: 7/25/2022

Why do ions have difficulty moving through the cellular membrane? a) They are too large and therefore are repelled by the exterior of the phospholipid bilayer.. b) They are too small and therefore are repelled by the interior of the phospholipid bilayer.. c) They are charged and therefore are repelled by the interior of the phospholipid bilayer. d) They are charged and therefore are repelled by the exterior of the phospholipid bilayer.