Diffusion and Passive Transport

unnatural

natural

artificial

synthetic

A) Particles stop moving

B) Particles are evenly distributed

C) Particles increase in size

D) Particles change state.

Active transport

Passive transport

Endocytosis

Exocytosis

It requires energy

It moves molecules from low to high concentration

Each type of molecule has its own concentration gradient

It only occurs in liquids.

A) It moves molecules up their concentration gradient

B) It requires energy to move molecules

C) It naturally moves molecules down their concentration gradient

D) It is unrelated to concentration gradients.

osmosis

diffusion

filtration

evaporation

Molecules move in one direction

Molecules move randomly with no net change

Molecules stop moving

Molecules move faster.

stopped

equal in both directions

faster in one direction

random

They block water passage

They speed up water movement

They allow solutes to pass

They change water levels.

A solution with a lower concentration of solute inside the cell

A solution with a higher concentration of solute outside the cell

A solution with equal concentration of solute inside and outside the cell

A solution with no solute.