What is moving through the membrane during osmosis?
salt
sugar
solutes
water
During the process of osmosis, it is water that moves through the membrane.
Osmosis is the movement of water molecules across a semipermeable membrane from a region of higher water concentration (lower solute concentration) to a region of lower water concentration (higher solute concentration).
The solutes, such as salt, sugar, or other dissolved particles, do not pass through the membrane during osmosis. Instead, it is the water molecules that move across the membrane to try to equalize the concentration of solutes on both sides.
So, the correct answer is that water is the substance moving through the membrane during osmosis.