Diffusion & Osmosis

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration until they are evenly distributed.

Front

What is osmosis?

Back

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

Front

What does selective permeability mean?

Back

Selective permeability is the ability of a cell membrane to allow some substances to pass through while blocking others.

Tags

NGSS.MS-LS1-2

Front

What happens to a red blood cell in a concentrated salt solution?

Back

The red blood cell loses water and shrinks due to osmosis.

Tags

NGSS.MS-LS1-5

Front

What happens to a red blood cell in pure water?

Back

The red blood cell gains water and may burst due to osmosis.

Tags

NGSS.MS-LS1-5

Front

What is the effect of salt water on gummy bears?

Back

Gummy bears placed in salt water will lose water and shrink due to osmosis.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Front

What is the concentration gradient?

Back

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

Tags

NGSS.HS-LS2-5

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state reached when the concentration of molecules is the same throughout a space.

Front

What role does the cell membrane play in osmosis?

Back

The cell membrane controls the movement of water in and out of the cell during osmosis.

Front

What is hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to another solution.

Tags

NGSS.MS-LS1-2