Cell Membrane Structure & Molecule Transport Part 1

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CELL MEMBRANE STRUCTURE & FUNCTIONS

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Cell Membrane Structure & Molecule Transport Part 1 Pre AP Biology Cell Membrane Structure & Molecule Transport Part 1

Cell Membrane

Cytoskeleton

Centrioles

Cellular Movement

Microfilaments in muscle tissue

Amphipathic Phospholipids WATER Hydrophilic head Hydrophobic tail WATER

Amphipathic Proteins Hydrophilic region of protein Phospholipid bilayer Hydrophobic region of protein

Fluid Mosaic Model and Phospholipids Lateral movement (~107 times per second) Flip-flop (~ once per month) Movement of phospholipids

Membrane Protein Functions Signal Enzymes Receptor ATP Transport Enzymatic activity Signal transduction

Membrane Protein Functions Glyco- protein Cell-cell recognition Intercellular joining Attachment to the cytoskeleton and extra- cellular matrix (ECM)