BIOL 101-Membrain Transport

Created by R Whittin

Integral proteins
for transport

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TermDefinition
Integral proteins
for transport
Peripheral proteins
receive and send chemical signals
Carbohydrates
attachment to surfaces or other cells (has GLYCOlipids and GLYCOprotins)
Glycolipids
carbohydrates attached to phospholipids
Glycoproteins
carbohydrates attached to integral proteins
Cholesterol
holds the membrane together while promoting flexibility
Solute
dissolved particles
Solvent
fluid/gas in which particles are dissolved
Simple Diffusion
(passive)-solute particles from a region of high concentration to a region of low
Hypertonic
describes a solution that possesses a higher solute concentration than another
Hypotonic
describes a solution that possesses a lower solute concentration than another
Isotonic
describes a solution that possesses an equal solute concentration to another
Osmosis
(passive) movement of water molecules from low solute concentration (high water concentration) to high solute concentration (low water concentration)
Crenation
shriveling of cell due to excessive water loss (animal cell)-hypertonic mixture
Plasmolysis
cell membrane pulls inwardly away from cell wall due to excessive water loss (plant cell)-hypertonic mixture
Lysis
bursting of cell membrane due to excessive water intake (animal cells) -hypotonic mixture
Turgid
swell of cell due to excessive water intake (plant cells favorite) -hypotonic mixture
Normal
No net movement or osmosis-water move in both directions (animals cells favorite) -isotonic mixture
Flaccid
No net movement or osmosis-water move in both directions (plant cells) -isotonic mixture
Facilitated Diffusion
(passive) large solute particles from a region of high concentration to a region of low through an integral protein.
channel proteins
-Facilitated Diffusion- proteins always open
definition image
carrier proteins
-Facilitated Diffusion-protein change shape
definition image
Passive Prosses
No ATP required -simple diffusion -osmosis -facilitated diffusion
Active Prosses
ATP(energy) required -active transport -endocytosis -exocytosis
Active Transport
(active) movement of solute particles from low solute concentration to high solute concentration through an integral protein
Proton Pumps
(active transport) Protons (hydrogen ions) are pumped out through a cell membrane-- Low to High concentration
Cotransport
(active transport is followed by) only pass through a cell membrane when accompanied by another solute
Endocytosis
(active) movement of solutes into a cell through the formation of vesicles 3 types: Phagocytosis, Pinocytosis, and receptor-mediated endocytosis
Phagocytosis
engulfment of large substances into a cell through vesicle formation "cellular eating" "nom nom" (endocytosis)
Pinocytosis
intake of small solutes and water through the formation of vesicles from invaginations that form along the cell membrane "cellular drinking" (endocytosis)
Receptor-mediated endocytosis
intake of specific solutes into a cell through vesicle formation (endocytosis)
definition image
Clathrin
protein that surrounds the vesical (receptor) in Receptor-mediated endocytosis surrounds the Y
Y
receptor surrounded by clathrin protein in receptor-mediated endocytosis
Triangle
the solute the Y collects specifically in receptor-mediated endocytosis
Exocytosis
movement of solutes out of a cell through the formation of vesicles (active)
definition image
Secretory vesicles
vesicles used in exocytosis, from the Golgi for the release of cellular waste out of a cell or of for cellular products that needed to be shipped to another location