Diffusion, active transport and osmosis

Define diffusion

The spreading out of the particles of from an area of higher concentration to an area of lower concentration

How does a shorter diffusion distance affect diffusion?

It speeds it up

How does a larger surface area affect diffusion

It speeds it up

What else can be done to speed diffusion up?

-Larger concentration gradient

-Higher temperature

Define active transport

Particles moving from a more dilute solution to a more concentrated solution (against the concentration gradient)

What do cells need for active transport?

Energy from respiration

Where does active transport take place in the body?

The gut with glucose to the blood

Where does active transport take place in a plant?

It takes place in the root hair cell where a low mineral ion concentration moves to a high mineral ion concentration

Define osmosis

Osmosis is the movement of WATER from a dilute to a concentrated solution through a partially permeable membrane.