Diffusion and Osmosis Quiz

What is diffusion?

• The movement of particles from lower to higher concentration

• The movement of particles from higher to lower concentration

• The movement of water through a membrane

• The movement of particles against a concentration gradient

What happens to the scent particles of an air freshener when released into a room?

• They remain in one spot

• They sink to the floor

• They collide with air particles and spread throughout the room

• They all move to the ceiling

Tags

NGSS.MS-PS2-5

Which factor does NOT increase the rate of diffusion?

• Increasing temperature

• Increasing pressure

• Decreasing concentration gradient

• Stirring the mixture

What is a concentration gradient?

• The process of particles spreading out evenly

• The difference in concentration between two areas

• The speed at which particles move

• The color change in a solution

How do oxygen and carbon dioxide move in and out of cells?

• Through active transport

• By diffusion

• By osmosis

• Through endocytosis

Why do cucumbers lose water when placed in a salt solution?

• The salt absorbs the water

• Water moves out to balance the concentration

• Salt particles enter the cucumber

• The cucumber cells break down

Tags

NGSS.MS-LS2-4

What role does the cell membrane play in diffusion?

• It blocks all substances

• It allows all substances to pass freely

• It selectively allows certain substances to pass through

• It transports particles against the gradient

Tags

NGSS.MS-LS1-2

Which of the following best describes osmosis?

• Movement of particles from a higher to a lower concentration

• Movement of water from a lower to a higher concentration

• Movement of water through a selectively permeable membrane

• Movement of particles in response to temperature

Tags

NGSS.MS-LS1-2

What is the effect of heating on particle movement during diffusion?

• Particles move slower

• Particles move faster

• Particles stop moving

• Particles move in a circular motion

Tags

NGSS.MS-PS1-4

In which process is diffusion NOT involved?

• Oxygen entering blood cells

• Carbon dioxide leaving muscle cells

• Food coloring spreading in water

• Sodium pumped out of nerve cells