Osmosis and diffusion

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What do cells need to take in?

Back

Cells need to take in food, water, and oxygen. They do not need to take in waste.

Front

Where does the exchange of materials between the cell and its environment occur?

Back

The exchange of materials occurs at the cell membrane.

Front

What is the normal shape of a red blood cell?

Back

A normal red blood cell is typically round and biconcave, resembling option A.

Front

What is plasma made up of?

Back

Plasma is made up of water, salts, sugars, and proteins.

Front

Define diffusion.

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.

Front

What is a selectively permeable membrane?

Back

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

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 where the concentration of particles is equal throughout a space.