Question

For a cell to maintain the appropriate balance of materials inside and outside of the cell, materials must be able to move in and out of the cell. The degree in which materials are able to flow freely through a cell's membrane is known as A. Permeability. B. Reabsorption. C. Transpiration. D. Oxidation.

Answer 1

A. Permeability

This is the definition of permeability, movement across a membrane.