Section 3
Transport Across the Cell Membrane
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By Boundless
Boundless Microbiology
Microbiology
by Boundless
5 concepts
![Thumbnail](../../../../../../figures.boundless-cdn.com/18632/square/figure-05-02-04.jpeg)
Facilitated transport
Facilitated diffusion is a process by which molecules are transported across the plasma membrane with the help of membrane proteins.
![Thumbnail](../../../../../../figures.boundless-cdn.com/18641/square/figure-05-03-03.jpeg)
Primary Active Transport
The sodium-potassium pump maintains the electrochemical gradient of living cells by moving sodium in and potassium out of the cell.
![Thumbnail](../../../../../../figures.boundless-cdn.com/14623/square/400px-abc-importer.jpeg)
ABC Transporters
ABC transporters are a protein superfamily that all have an ATP binding cassette and transport substances across membranes.
![Thumbnail](../../../../../../figures.boundless-cdn.com/11812/square/0px-enterobactin-synthesis.jpg)
Siderophores
Siderophores are classified by which ligands they use to chelate the ferric iron, including the catecholates, hydroxamates, and carboxylates.
![Thumbnail](../../../../../../figures.boundless-cdn.com/11341/square/pseudomonas-aeruginosa-01.jpeg)
Group Translocation
Group translocation is a protein export or secretion pathway found in plants, bacteria, and archaea.