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Chapter 5 Bio

Words on Chapter 5 of Bio!

TermDefinition
Diffusion Process where molecules move from areas of high concentration to areas of low concentration
Equilibrium Equal concentration throughout
Permeable A substance that is able to diffuse across a membrane
Selectively Permeable Cell Membranes; can regulate what enters and exits
Factors that Affect Permeablity Size, Cemical Composition, Pressure, pH
Osmosis The diffusion of water across a selectively permeable membrane such as the cell membrane
Hypertonic When water rushes in, explodes
Hypotonic When water rushes out, shrivels up
Isotonic Equal H2O and Solute
Turgor Pressure The pressure created by the movement of H2O into plant cells
Active Transport The movement of a substance across a membrane against its concentration gradient
Homeostasis A state of equilibrium to a body
Active Transport Requires energy usage, low to high concentration
Sodium Potassium Pump Releasing sodium from inside the cell and bringing them outside the cell, opposite with potassium
Exocytosis A process by which cells export substances in vesicles
Vesicles A membrane bound organelle
Endocytosis Cells import substances in vesicles
Phagocytosis Cell Eating
Pimocytosis Cell Drinking
Created by: termini
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