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14 terms

Chapter 5

Turgor Pressure
water pressure within a plant cell
the shrinking or wilting of a walled cell in a hypertonic enviorment
Facilitated diffusion
a process in which substances move down their consentrated gradient aross the cell membrane with the assistance of carrier protiens
carrier proteins
a protein that transport specific substances across a biological membrane
the bursting of a cell
ion channel
a membrane protein that that provides a passway across th ecell membrane through which an ion can diffuse
active transport
the movement of a substance across a cell membrane against a concentration gradient requires the cell to expand energy
sodium-patassium pump
active transport in an animal cell, involves carrier proteins
a membran-bond sac in a eukaryotic cell that contains materials involved in endocystosis, exocystosis, or transport within a cell
the process by which a cell surronds and engulfs substances
a type of endocytosis in which a cell engulfs large particles or whole cells
a type o f endoctosis in which a cell engulfs solutes or fluids
a cell theat engages in phagocytosis
a process in which a vesicle inside a cell fuses with the cell membrane and releases its contents to the external enviorment