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Transport across Cell Membranes
Methods of transport across cell membranes
16
Biology
Undergraduate 1
02/24/2011

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Term
Passive
Definition
movement of materials across cell membranes without the use of any energy
Term
Diffusion
Definition
The movement of materials from a greater concentration to a lesser concentration
Term
Permeable
Definition
Allows things to travel across
Term
Semi-Permeable
Definition
Allows somethings to travel through
Term
Impermeable
Definition
Allows nothing to travel through
Term
Istonic
Definition
Equal movement into and out of a cell
Term
Hypotonic
Definition
Movement into a cell
Term
Hypertonic
Definition
Movement out of a cell
Term
Lyse
Definition
this term refers to when a salty blood cell pulls in water and then explodes.
Term
Crenate
Definition
This is when a cell shrivels up.
Term
Active Transport
Definition
The movement of materials across cell membranes using energy.
Term
Pumps
Definition
Movement of materials into and out of a cell through cell membranes proteins, using energy.
Term
Exocytosis
Definition
THe cell wants to get rid of garbage, puts garbage into a bag and puts it out.
Term
Endocytosis
Definition
The cell takes in material into the cell. There are two forms of this.
Term
Phagocytosis
Definition
A form of Endocytosis. Means to take in solids.
Term
Pinocytosis
Definition
A form of Endocytosis. Means to take in liquids.
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