Diffusion & Osmosis

Which is the correct definition of diffusion?

• Movement of particles from an area of low concentration to an area of high concentration.

• Movement of particles from an area of high concentration to an area of low concentration.

Diffusion requires energy.

• True

• False

Which gas moves into cells for use in respiration?

• Carbon dioxide

• Oxygen

• Carbon monoxide

• Glucose

Which gas released in respiration diffuses out of the blood into the lungs to be exhaled?

• Oxygen

• Carbon Dioxide

• Glucose

• Carbon monoxide

Where is there a low concentration of dye?

• at the bottom of cup

• in the color

• at the top of cup

• no concenteraion gradient

What causes diffusion?

• The constant, random motion of molecules

• Magnetic attraction between atoms

• The nuclear forces that hold atoms together

• The tendency of atoms to form chemical bonds with one another

Tags

NGSS.MS-PS3-1

Why is diffusion so important in biology?

• It's the basic power source for most types of cells

• It allows substances to move across cell membranes

• It prevents toxins from entering our bodies

• Without diffusion, cell division could not take place

Tags

NGSS.HS-LS2-3

What does a 'region with high concentration' mean?

• An area with a SMALL number of particles

• An area with a LARGE number of particles

• An area with an UNEVEN number of particles

• An area with no particles

Tags

NGSS.HS-PS1-5

Which diagram best shows the end result of diffusion?

• F
• G
• H
• J

Tags

NGSS.HS-PS1-5

If there is more oxygen in the blood than in an organ, which direction would the oxygen move?

• Out of the blood
• Into the blood