AP Biology Osmosis and Diffusion Flashcards

6730239355	Solution	A liquid mixture of two or more substances	0
6730239356	Solute	A substance that is dissolved in a liquid	1
6730239357	Solvent	The liquid in which a solute is dissolved	2
6730239358	Dissolved	If something is dissolved in a liquid, it can only be separated out if the liquid is evaporated off.	3
6730239359	Suspended	If a substance is suspended the substance can be filtered out of the liquid	4
6730239360	Concentration	How much of a substance is found in a solution.	5
6730239361	Diffusion	The movement of a substance from an area of high concentration to an area of low concentration	6
6730239362	Concentration gradient	The change in the concentration of a substance from one area to another ex. photosynthesis(ATP pump) or excreting urine from the kidney.	7
6730239363	Permeable	Substances can pass through	8
6730239364	Impermeable	substances cannot pass through	9
6730239365	Selectively permeable	Some things can pass through, but not others	10
6730239366	Equilibrium	Where there is no net movement of the substance because the concentration is equal throughout.	11
6730239367	Net movement	Overall change in concentration (NOTE: THERE IS STILL MOVEMENT EVEN IF THERE IS NO NET MOVEMENT)	12
6730239368	Osmosis	The movement of water from areas of high water concentration (low solute concentration) to low water concentration (high solute concentration).	13
6730239369	Isotonic Solution	A solution in which the concentration of the dissolved substance is equal on both sides of the cell membrane	14
6730239370	Hypertonic Solution	A solution in which the concentration of the dissolved substance is high (This is a relative term)	15
6730239371	Hypotonic Solution	A solution in which the concentration of the dissolved substance is low (This is a relative term).	16
6730239372	Turgid	Used to refer to a plant cell in a hypotonic solution	17
6730239373	Flaccid	Used to refer to a plant cell in an isotonic solution	18
6730239374	Plasmolysis	Used to refer to a plant cell in a hypertonic solution	19
6730239375	Homeostasis	To maintain a stable internal environment	20
6730239376	Turgor Pressure	water pressure within a plant cell.	21
6730239377	Lipids	fats. Cell Membrane fats are called Phospolipids	22
6730239378	Bilayer	two layers	23
6730239379	Hydrophilic	Attracted to water	24
6730239380	Hydrophobic	not attracted to water	25
6730239381	Passive transport	Movement of a substance across the membrane without the use of protein or energy produced by the cell	26
6730239382	Active transport	Movement of a substance across the membrane with the use of a protein an the use of energy produced by the cell	27
6730239383	Facilitated Transport	Movement of a substance across the membrane with the use of a protein without the use of energy produced by the cell	28
6730239384	Endocytosis	The cell membrane fold around the substance and carries it into the cell	29
6730239385	Exocytosis	The cell membrane fold around the substance and carries it out of the cell	30
6730239386	Lysis	when a cell explodes	31
6730239387	Fluid Mosaic Model	The model of the cell membrane that has proteins and lipids moving flexably within the cell membrane	32