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(plasma membrane), cell structure & function - Coggle Diagram
plasma membrane
structure of the membrane
transport
passive transport
active transport
requires ATP
protein pumps
sodium-pottasium pump
diffusion
osmosis
facilitated diffusion
uses transport proteins
channel proteins
carrier proteins
still passive (no ATP)
diffusion of water
across selectively permeable membrane
towards higher solute concentration
bulk transport
tonicity
isotonic
equal solute inside and outside cell
no net water movement
cell stays normal
hypertonic
higher solute outside cell
water moves OUT
cell shrinks
hypotonic
lower solute outside cell
water moves IN
cell swells
endocytosis
phagocytosis
pinocytosis
receptor-mediated
specific molecules
uses receptor proteins
cell drinking
fluids
cell eating
large particles
exocytosis
vesicle fuses with membrane
secretes material outside
fluid mosaic modal
phopholipid Bilayer
membrane proteins
carbonhydrates
gylcoproteins
cell-cell adhesion
immune system recognition
intergral proteins
penetrate bilayer
often transport proteins
peripheral proteins
transport
enzymatic activity
signal transduction
cell recognition
intercellular joining
attachment to cytoskeleton
hydrophilic (polar)
hydrophobic (non polar)
membrane is fluid
mosaic= many different proteins
cell structure & function