passive transport

Types of passive transport - Diffusion

Involves particles moving deom an area where they are jn high concentration to an area where they are in low conc without the use of energy

Rate of diffusion factors

• The difference in concentration between the two area. This is known as the concentration gradient

• Size - smaller particles diffuse faster

• Temperature-particles diffuse faster at high temperatures than they do at low

• State- gas particles diffuse more quickly than liquid ones

facilitated Diffusion ( always in a cell)

Involves the use of specific channels and proteins to enable proteins to move from an area where they are in high concentration to an area where they are in low conc without the use of energy.

Osmosis(always in/out of a cell-water movement)

Passive trabsportt of water through a smei permeable membrane from a high concentration to a low conc gradient

Hypotonic ( -swoll-absorb)(fat and burst)

The solution has a lower concentration of solutes and a high concentration of water molecules than inside the cell

This results in water moving from the solution to inside the cell…

The animal cell swells and bursts open (cytolysis)

a dilute solution/high amounts of water

Hypertonic -aren't getting enough water/liquid (shrivel up)

The solution has a higher concentration of solutes and a lower concentration of water molecules than inside the cell

This results in water moving from inside the cell into the solution…

Cell shrinks (plasmolysis)

concentrated solution/ low amount of water

Istonic -stays the same (move at an equal rate)

The concentration of solutes in the solution is equal to the concentration of solutes inside the cell.

This results in water moving equally in both directions and the cell remains the same size! (Dynamic Equilibrium)

the two solutions have the same concentration