Question

Glucose, a small uncharged molecule, can pass through the cell membrane, but sodium ions do not pass through the membrane easily. What is the most accurate explanation for these findings? A. The cell membrane is semi-permeable. B. The cell membrane is permeable C. None of these

Answer 1

Answer: The CELL membrane is semi-permeable

Explanation: Permeability of a Cell membrane is the ability of the membrane to allow the passage of materials through it. In most cases the materials can be minute(small) solutes such as ions like Sodium, Magnesium,casium etc.

Semi-permeable membranes are membranes that selectively allow the passage of certain materials especially based on the size,shape etc of the particles involved,Certain membranes have different pore sizes and shape.