Question

define permeable and impermeable

Answer 1

A membrane can be fully permeable, selectively permeable or impermeable. These terms represent the property of membrane to allow the passage of substances like ions across it.

Fully permeable : The membranes which allow the passage of all substances without any hindrance across it are referred as fully permeable membranes.

Selectively permeable : The membranes which allow the passage of only few selective substances across it are referred as selectively permeable membranes.

Impermeable : The membranes which don't allow the movement of substances across it are termed as impermeable.