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BIOL - 161 Vocab Ch 5
Vocabulary Chapter 5
15
Biology
Undergraduate 2
12/04/2011

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Term
Selective permeability
Definition
a property of plasma membranes
Term
Carrier protein
Definition
a membrane component necessary for active transport
Term
Turgor pressure
Definition
occurs when water moves into cells having a cell wall
Term
Osmosis
Definition
diffusion of water across a selectively vesicles with the plasma membrane
Term
Phagocytosis
Definition
endocytosis or large particles
Term
Pinocytosis
Definition
endocytosis of dissolved substances
Term
Simple diffusion
Definition
movment down a concentration gradient
Term
Facilitated diffusion
Definition
carrier-assisted movement along a concentration gradient
Term
Active transport
Definition
carrier-assisted movement against a concentration gradient
Term
ATPase
Definition
enzyme associated with membrane pump
Term
Isotonic
Definition
solute concentration outside cell is equal to cellular solute concentration
Term
Hypertonic
Definition
solute concentration outside cell is more than cellular solute concentration
Term
Hypotonic
Definition
solute concentration outside cell is less than cellular solute concentration
Term
Endocytosis
Definition
pinocytosis and phagocytosis
Term
Exocytosis
Definition
this involves fusion of cytoplasmic vesicles with the plasma membrane
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