HSS 1100 Lecture 5: 5HSS1100

• School: University of Ottawa
• Department: Health Sciences
• Course: HSS 1100
• Professor: William Yan

Document Summary

Can make spores, this protects the bacteria from being killed. Can tolerate a wide range of environments. Because of thick wall, nutrients can"t get in either. Stable and highly resistant to dry conditions, high temperatures - because of spores: animal hide or skin, in the soil. If you"re doing a lot of farming or animal handler: bio-terrorism - uses spores and releases them into populations and people get anthrax. If pxo2 is missing then it can die fast. Needs both, first one allows for survival so the other can make proteins. Vaccine exists but only if you"re in a high chance group. Heat labile - not resistant to heat: short lasting. Heat stable - resistant to heat: symptoms appear quickly and are severe, short lasting. When rice is packaged, environment is dry so b. cereus senses a dry dark environment, so it turns. It"s in the soil so rice is usually contaminated into its spore form.