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Transport of solutes across membranes

  • Engelbert Buxbaum

Abstract

Cells are surrounded by a cell membrane, which consists of a double layer of lipid molecules. Only small, lipophilic (fat-loving) substances (gases, ethanol) can pass this membrane unaided, most biologically relevant molecules are hydrophilic (water-loving), they can not pass the cell membrane freely. Water too can penetrate the membrane only slowly. This allows the cell to actively maintain an internal composition that is different from the outside environment, one of the characteristics of life.

Keywords

Brown Adipose Tissue Phosphatidyl Choline Proton Gradient Nucleotide Binding Site Phosphatidyl Ethanolamine 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 2007

Authors and Affiliations

  • Engelbert Buxbaum
    • 1
  1. 1.Department of BiochemistryRoss University School of MedicineWest Indies

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