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Bio Cell Transport

Cell Transport - Bio

Definition of diffusion Movement of molecules from high concentration to low concentration
Examples of diffusion Food coloring in water
A quality of diffusion Requires no energy
Definition of osmosis The diffusion fo water across a semi-permeable membrane
Membrane Skin like area near the outside of a cell that is ALWAYS SEMI-PERMEABLE
Definition of semi-permeable Some things can pass through and others can not
Definition of hypertonic solution Solution has higher salt concentration than the cell
Definition of hypotonic solution Solution has lower salt concentration than cells
Definition of isotonic solution Solution has equal salt concentration as cell
What happens to a cell in hypotonic state cell swells - bursts
What happens to a cell in hypertonic state cell shrinks
What happens to a cell in isotonic state cell stays the same
Definition of facilitated diffusion high concentration to low that occurs through transport proteins
Definition of passive transport thrsport of cell particles that requires NO energy
Example of facilitated diffusion glucose (sugar) moves into cells through transport proteins
Requirements of active transport requirements: a transport protein and energy (ATP)
Movement of molecules during active transport molecules move from low to high concentration
Definition of endocytosis large particles are surrounded by the membrane and taken into the cell
Movement in endocytosis membrane pinches off, forms a vacuole
Two types of endocytosis Phagocytosis and pinocytosis
Definition of phagocytosis large molecules taken in, amoebas "eat" this way
Definition of pinocytosis small molecules are taken in during endocytosis
Definition of exocytosis Wastes or proteins are sent to cell surface and released
Definition of dynamic equilibrium large wastes or cell products are released from inside to outside a cell
Definition of active transport the transport of cell particles continue to move but in equal amounts in and out of the cell
Quality of plasma membrane the structure most responsible for maintaining cell homeostasis
Phospholipid bilayer a layer in the plasma cell membrane
Three types of passive transport facilitated diffusion, diffusion, and osmosis
One type of active transport endocytosis
Salt concentration in active transport a cell moves particles from an arc of low salt concentration to high concentration
Created by: tobiashersey



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