BIOA01H3 Lecture Notes - Microbiological Culture, Microorganism, Mucus

• School: UTSC
• Department: Biological Sciences
• Course: BIOA01H3
• Professor: Mark Fitzpatrick

Document Summary

Canning: sealing food in airtight cans/jars after killing bacteria, endospores are killed. Dehydration: removing water from food, bacteria can"t grow when h2o is removed. Antiseptic: chemicals that kill bacteria on living things (hydrogen peroxide, soap, mouthwash) Disinfectants: stronger chemicals that destroy bacteria on objects (lysol, clorox) Use dna & rna to store information. Cant reproduce on their own, need a host to reproduce. Made of proteins and nucleic acids (dna&rna) Lytic cycle: bacteriophage attaches to the host cell and injects its dna. Forces the hosts cells enzymes and synthesis to make copies of the dna. Once there are many copies, the host cell bursts releasing new viruses. Cycle is repeated when they infect other cells. Lysogenic cycle: the viral genes are already in the host cell. Each time the host cell reproduces, the viral dna is coped too. An environment change can trigger the viral dna to separate from the hosts and start a lyric cycle.