which type of material can easily pass through a cell membrane without the assistance of a protein?\no…

which type of material can easily pass through a cell membrane without the assistance of a protein?\no ions\no charged molecules\no large molecules\no none of the above
Answer
Brief Explanations:
Cell membranes are composed of a lipid - bilayer. Ions, charged molecules, and large molecules cannot easily pass through the non - polar lipid - bilayer without the assistance of proteins (channels or carriers). The lipid - bilayer is non - polar and repels charged and large substances.
Answer:
None of the above