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Cell Transport U3

TermDefinition
Active Transport Moving molecules from areas of low concentration to low concentration. Requires ATP. Against gradient.
Passive Transport Moving molecules from areas of high concentration to low concentration and does not require ATP. With gradient.
Semi-permeable membrane The phospholipid surrounding that decides what enters or cannot enter the cell.
Phospholipid bilayer Universal cellular structure composed of two layers. Contains hydrophilic heads and hydrophobic tails
Diffusion Moving molecules from areas of high concentration to low concentration.
Facilitated diffusion Moving molecules from areas of high concentration to low concentration through the usage of protein channels to transport.
Osmosis Moving specifically water molecules from areas of high concentration to low concentration.
Protein channel Passive, open pores, which allow for larger molecules to enter/exit the cell without the use of ATP.
Protein pump Active, pushes molecules to go against the gradient. Requires ATP.
ATP Adenosine Triphosphate. The complex organic compound, acting as the primary energy carrier in Cells.
Endocytosis Brings materials into the cell through engulfing.
Exocytosis Moves materials out of the cell through expelling.
Hypertonic There's a higher conc. outside than inside. Water moves out of the cell, causing shriveling.
Hypotonic There's a lower conc. outside than inside. Water moves into the cell, causing swelling.
Isotonic There's a relatively equal concentration between both inside and outside. Everything is the same.
Created by: calebcstudent
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