Understanding Osmosis: Diffusion of Water Through a Partially Permeable Membrane.

The video tutorial explains osmosis as the diffusion of water through a partially permeable membrane from a dilute to a concentrated solution. It describes how osmosis involves random movement of water molecules, resulting in a net movement from higher to lower water concentration until equilibrium is reached. The tutorial also covers the role of osmosis in cells, where the cell membrane acts as the partially permeable membrane, allowing water to move in and out of cells.

What is the primary function of a partially permeable membrane in osmosis?

• To facilitate the movement of sucrose molecules

• To allow only certain molecules to pass through

• To block all molecules from passing through

• To allow all molecules to pass through

In the context of osmosis, what happens to water molecules when two solutions are separated by a partially permeable membrane?

• They move only from the dilute to the concentrated solution

• They move randomly in both directions

• They move only from the concentrated to the dilute solution

• They remain stationary

What is the net movement of water molecules during osmosis?

• From a lower to a higher water concentration

• From a higher to a lower water concentration

• Equally in both directions

• There is no net movement

How does osmosis occur in cells?

• Through the cell wall

• Via the cell membrane

• Through the cytoplasm

• Via the nucleus

What role does the cell membrane play in osmosis within cells?

• It serves as a partially permeable membrane

• It facilitates the movement of proteins

• It prevents any movement of water

• It acts as a fully permeable barrier