Diffusion and Osmosis

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Tags

NGSS.MS-LS2-3

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration.

Front

In a hypotonic solution, what happens to a cell?

Back

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

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain molecules to pass through while blocking others.

Front

What is the effect of a hypertonic solution on a cell?

Back

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

Tags

NGSS.HS-LS1-3

Front

How does temperature affect the rate of diffusion?

Back

Higher temperatures increase the kinetic energy of molecules, leading to a faster rate of diffusion.

Tags

NGSS.MS-PS1-4

Front

What is the role of concentration gradients in diffusion?

Back

Concentration gradients drive the movement of molecules from areas of high concentration to areas of low concentration.

Front

What happens to ocean fish in freshwater?

Back

Ocean fish cannot survive in freshwater because it is hypotonic to their cells, causing water to enter and potentially burst the cells.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move molecules against their concentration gradient, while passive transport does not require energy.

Front

What is equilibrium in the context of diffusion?

Back

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