the cell review. cell membrane structure phospholipids
TRANSCRIPT
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The cell review
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Cell membrane Structure
Phospholipids
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Cell membrane
Proteins
Transport
Enzymes
Cell recognition
Receptors
Joining
Cytoskeleton
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Fig. 7-7
Fibers ofextracellularmatrix (ECM)
Glyco-protein
Microfilamentsof cytoskeleton
Cholesterol
Peripheralproteins
Integralprotein
CYTOPLASMIC SIDEOF MEMBRANE
GlycolipidEXTRACELLULARSIDE OFMEMBRANE
Carbohydrate
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Transport
Passive Diffusion OsmosisFacilitated diffusionBulk transportPinocytosis, phagocytosis, receptor mediated Active
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Concentrations
Isotonic
Hypotonic
Hypertonic
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Fig. 7-13
Hypotonic solution
(a) Animal cell
(b) Plant cell
H2O
Lysed
H2O
Turgid (normal)
H2O
H2O
H2O
H2O
Normal
Isotonic solution
Flaccid
H2O
H2O
Shriveled
Plasmolyzed
Hypertonic solution
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Lowerconcentrationof solute (sugar)
Fig. 7-12
H2O
Higher concentrationof sugar
Selectivelypermeablemembrane
Same concentrationof sugar
Osmosis
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Cell signaling
Direct contact
Local
Long distance
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Cell signaling
Reception
Transduction
Response
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Fig. 11-6-3
EXTRACELLULARFLUID
Plasma membrane
CYTOPLASM
Receptor
Signalingmolecule
Relay molecules in a signal transduction pathway
Activationof cellularresponse
Transduction Response2 3Reception1
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Reception
Ligand
Intracellular receptors
Ion channels
G-protein
Tyrosine Kinases
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Transduction
Protein kinasesProtein phosphatasesSecond messengerscAMPAdenylyl cyclaseCalciumPhospholipase CIP3
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Fig. 11-14
Growth factor
Receptor
Phosphorylationcascade
Reception
Transduction
Activetranscriptionfactor
ResponseP
Inactivetranscriptionfactor
CYTOPLASM
DNA
NUCLEUS mRNA
Gene
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Fig. 11-15
Reception
Transduction
Response
Binding of epinephrine to G protein-coupled receptor (1 molecule)
Inactive G protein
Active G protein (102 molecules)
Inactive adenylyl cyclaseActive adenylyl cyclase (102)
ATPCyclic AMP (104)
Inactive protein kinase AActive protein kinase A (104)
Inactive phosphorylase kinase
Active phosphorylase kinase (105)
Inactive glycogen phosphorylase
Active glycogen phosphorylase (106)
GlycogenGlucose-1-phosphate
(108 molecules)