Chapter 7 Microbial Growth Binary fission Steps in Binary Fission ...

Sugar diffusion in coffeeFacilitated diffusion• Transport of polar molecules and ionsacross the membrane• No energy is expended (passive)• Carrier protein facilitates the bindingand transport– Specificity– Saturation– CompetitionFacilitated diffusionActive transport• Transport of molecules against agradient• Requires energy (active)• Ex. Permeases and protein pumpstransport sugars, amino acids, organicacids, phosphates and metal ions• Ex. Group translocation transports andmodifies specific sugarsPermeases Group translocation -usually entities are modified8