GENERAL KNOWLEDGE

Detailed explanation-1: -The plasma membrane is virtually impermeable against larger, uncharged polar molecules and all charged molecules including ions. Indeed, despite their small size, Na+ and K+ have extremely low permeability coefficients (approximately 10−14 cm/s) [40].

Detailed explanation-2: -Impermeable membrane An impermeable membrane is one through which no substance can pass. Mitochondrial walls are example of impermeable membrane.