Question

which of these substances moves across cell membranes by osmosis? (1 point) salt sugar protein water

Explanation:

Osmosis is the diffusion of water across a semi - permeable membrane from an area of higher water concentration to an area of lower water concentration. Salt, sugar, and protein do not move by osmosis across cell membranes in the context of the osmosis definition. Water is the substance that moves by osmosis.

Answer:

Water