Science
What is equilibrium?
Condition in which the concentration of solutes in 2 solutioms is equal and cancel out eachother
What is transport protein?
Protein in a cell membrane that helps molecules pass through the membrane, by either forming a channel for the molecules or carrying the molecules through the membrane.
What is concentration?
Number of particles of a substance in a given volume
Concentration gradient
Difference in the level of concentration of a particular substance on each side of a cell membrane. When this exists, the substances will flow passively from the area of higher concentration to lower concentration.
Diffusion
Natural movement of a substance from an area of higher to lower concentration without the need for added energy.
Simple diffusion
Passive transport of a substance through a membrane without the help of transport proteins
Hypertonic solution
Solution that has more solute in it than the concentration of solute on the other side of the cell membrane.
Isotonic solution
Solution which has equal concentrations of solute on both sides of the membrane
Osmosis
Diffusion of water
Active transport
Passage of a substance through the cell membeane that requires emergy because the substance is moving from a lower to higher concentration or has very large molecules
Facilitated diffusion
Passive transport of a substance through a membrane with the help of transport proteins
Passive transport
Passage of a substance through the cell membrane that requires no energy because the substance is moving from a higher to lower concentration