Chapter 4,part B Functional Anatomy of Prokaryotic and Eukaryotic Cells
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings B.E Pruitt & Jane J. Stein Chapter 4, part B Functional Anatomy of Prokaryotic and Eukaryotic Cells
Plasma Membrane 。 Selective permeability allows passage of some molecules Enzymes for ATP production Photosynthetic pigments on foldings called chromatophores or thylakoids
• Selective permeability allows passage of some molecules • Enzymes for ATP production • Photosynthetic pigments on foldings called chromatophores or thylakoids Plasma Membrane
Plasma Membrane Damage to the membrane by alcohols,quaternary ammonium(detergents)and polymyxin antibiotics causes leakage of cell contents
• Damage to the membrane by alcohols, quaternary ammonium (detergents) and polymyxin antibiotics causes leakage of cell contents. Plasma Membrane
Movement Across Membranes Simple diffusion:Movement of a solute from an area of high concentration to an area of low concentration. Facilitative diffusion:Solute combines with a transporter protein in the membrane
• Simple diffusion: Movement of a solute from an area of high concentration to an area of low concentration. • Facilitative diffusion: Solute combines with a transporter protein in the membrane. Movement Across Membranes
Movement Across Membranes Transported Outside substance Transporter protein Plasma membrane Inside Figure 4.17
Movement Across Membranes Figure 4.17