Cell membrane and membrane transport updated
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Transcript of Cell membrane and membrane transport updated
Cell Membrane and Membrane Transport
Membrane Structure and Function
Composition: 98% Lipids (75% phospholipids, 20% cholesterol, 5% glycolipids)
Membrane Structure and Function
Proteins: <2% (transmembrane & peripheral)
Membrane Structure and Function
Fluidity of the membrane
Cholesterol
Membrane Structure and Function
Protein Functions
Membrane Structure and Function
Protein Functions
Membrane Transport
Brownian Motion• http://www.youtube.com/watch?v=cDcprgWiQEY
Membrane Transport
Passive—diffusion
Membrane Transport
Membrane Transport
Osmosis
Membrane Transport
Tonicity
Membrane Transport
Animals vs. Plants
Membrane Transport
Facilitated transport: passive but uses transport proteins
Membrane Transport
Facilitated transport: Rate of diffusion is limited by concentration
Membrane Transport
Active
Membrane Transport
Exocytosis vs. Endocytosis
• http://media.pearsoncmg.com/bc/bc_0media_bio/bioflix/bioflix.htm?cc7membrane• http://www.youtube.com/watch?v=JnlULOjUhSQ&feature=related
Energy and the Cell
ATP
Energy and the Cell
ATP & phosphorylation
Energy and the Cell
ATP & phosphorylation
How Enzymes Function
Activation Energy
How Enzymes Function
Activation Energy
How Enzymes Function
Activation Energy
How Enzymes Function
http://www.youtube.com/watch?v=V4OPO6JQLOE
How Enzymes Function: Inhibition
How Enzymes Function: Inhibition
Feedback Inhibition