| A | B |
|---|
| Cell membrane | regulates what goes into and out of the cell; provides protection and support; is made of a lipid bilayer |
| Cell wall | provides plant cells with protection and support |
| Lipid bilayer | double layered sheet of lipids |
| Concentration | the amount of solute in a certain amount of liquid (mass/volume) |
| Diffusion | when particles move from high concentration areas to lower concentration areas |
| Equilibrium | the concentration of a substance is the same through out |
| Osmosis | diffusion of water through a selectively permeable membrane |
| Isotonic | same concentration of solutes on both sides of a membrane (means same strength) |
| Hypertonic | a solution that has a higher concentration than another solution (means above strength) |
| Hypotonic | a solution that has a lower concentration than another solution (means below strength) |
| Facilitated diffusion | when cell membrane proteins are needed to help molecules diffuse in and out of the cell |
| Active transport | when proteins are used to move proteins opposite the direction of diffusion |
| Endocytosis | cell membrane folds to bring things into the cell |
| Phagocytosis | when a cell places particles in a food vacuole for digestion or breakdown |
| Exocytosis | vacuole membrane combines with the cell membrane to force material out of the cell |
| Cell specialization | different cell carry out specific jobs for the plant or animal |
| Tissue | groups of cells that have the same job or purpose |
| Organ | tissues combine together to do jobs that they cannot do alone (example food digestion in the stomach) |
| Organ system | organs work together to complete a job or task |
