Diffusion & Osmosis

What is one factor that could cause a substance to diffuse slowly?

• cold temperature

• hot temperature

• air

• color

The scent from an air freshener spreads throughout the room. How does this scent spread?

• osmosis

• conduction

• diffusion

• transpiration

A solvent is able to...

• Melt other substances

• Diffuse other substances

• Evaporate other substances

• Dissolve other substances

What is the solute?

• liquid used

• saturated

• substance being dissolved

• mixture

When CO2 and oxygen move from a high concentration to a low concentration this is known as...

• breathing

• oxyhaemoglobin

• photosynthesis

• diffusion

Diffusion. . .

• Requires energy

• Causes molecules to spread out

• Makes proteins

• Requires no energy

What is diffusion?

• movement of molecules from high to low concentration

• process occurring within a solid

• movement of molecules from low to high concentration

• process that prevents equilibrium

Which of these does NOT effect the speed of diffusion?

• temperature

• distance

• surface area

• light

Concentration gradient is. . .

• When molecules move from a concentrated area to a non concentrated area

• Process of molecules scattering around

• When molecules move from a non concentrated area to a concentrated area

• Molecules going through the plasma membrane

The random net movement of molecules DOWN a concentration gradient is...

• active transport

• diffusion

• osmosis

• movement