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cell membrane's

QuestionAnswer
what do cells need? an inside and an outside
what goes in a cell membrane? food sugars (simple sugars) proteins (amino acids) salts 02 (oxygen) H2O (water) fats (fatty acids)
what goes out a cell membrane? waste ammonis salt CO2 (carbon dioxide) H2O (water) products proteins
what is the cell membrane? boundary
what type of special lipid is a cell membrane made out of? phospholipids
what is the membrane double layer called? phospholipids bilayer
what does the cell membrane control? what goes in and out of the cell
the cell membrane is _ _ semi-permeable (only some materials can get in or out)
what molecules can get through the cell membrane directly? fats & oils
_ _ allows substances to go in & out protein channels
what are the channels made out of? protein
proteins act as _ in the membrane doors
how do molecules move in the cell membrane? high to low
what is diffusion? moving from a high to low concentration
what is equilibrium? when molecules are equal on both sides
what is passive transport passive transport no energy needed, no ATP needed
what is osmosis? the diffusion of water
what is simple diffusion? move from high to low
Diffusion directly through a membrane? no energy needed, simple diffusion
faciliated diffusion? no help through a protein channel, no energy
active transport 1) move from low to high using ATP 2) may need molecules to move against concentration 3)uses protein pump, 4) requires energy (ATP)
concentration gradient move from high to low
passive transport simple & facilitated diffusion
Created by: kpopnola
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