Sci2 Intro to Diffusion & Osmosis DO NOW

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What does selectively permeable mean?

Back

A property of cell membranes that allows certain molecules to pass through while blocking others.

Front

Give an example of diffusion.

Back

The smell of food travels from the kitchen to the dining room.

Front

What is equilibrium in the context of diffusion?

Back

A state where a substance is evenly distributed throughout a space.

Front

How do molecules move during diffusion?

Back

They move from an area of high concentration to an area of low concentration.

Front

What is the difference between active transport and diffusion?

Back

Active transport requires energy to move substances against their concentration gradient, while diffusion does not.

Front

What is a concentration gradient?

Back

A difference in the concentration of a substance across a space.

Front

What happens to a cell in a hypertonic solution?

Back

The cell loses water and may shrink.

Front

What happens to a cell in a hypotonic solution?

Back

The cell gains water and may swell or burst.

Front

What is facilitated diffusion?

Back

A process where molecules pass through the cell membrane via special proteins without energy.