BIOL 118 Lecture Notes - Lecture 30: Quorum Sensing, Copepod, Cholera

• School: University of San Diego
• Department: Biology Courses
• Course: BIOL 118
• Professor: Terry Bird

Document Summary

Biofilms: a high density population of bacteria attached. Produce enzymes for polysaccharide when they are attached to solid surface and have a big enough population sensed via quorum sensing, once done genes turned on & forms a matrix. Done for protection, antibiotic resistant, & protection fr nature (ie being consumed) If nutrients run outthey can break out and go to other sites. To be able to infect other people. Wells couldn"t sustain bacteria bc not brackish water. Sharp outbreak when it got into well. Ensure implants are free of biofilms or else difficult to kill. V. cholerae likes biofilms on plankton which are photosynthetic. Has chitin exoskeleton vc feeds off of this. No nutrients down in well eventually will die out*** Some actually rely on bacteria to disperse their eggs. Breaking down chitin to get more nutrients**** What are the environmental reservoirs for vibrio cholerae & yp? (possible exam question)