Diffusion and Osmosis

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What direction do solutes diffuse?

Back

Solutes diffuse from high concentration to low concentration.

Front

What is the difference between passive transport and active transport?

Back

Passive transport does not require energy and moves substances from high to low concentration, while active transport requires energy to move substances from low to high concentration.

Front

What is the primary component of cell membranes?

Back

Most of the cell membrane is made of lipids.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in concentration of a substance between two areas.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state reached when the concentration of a substance is equal throughout a space, and there is no net movement of molecules.