BIOL 1202 Chapter : Bio 1202 Unit 2
Document Summary
), bacteriophage: 3 common parts, genome: genetic information. Can be single or double stranded dna or rna: ssrna-hiv, hiv mutates faster than flu, helper t cells and reverse transcriptase (from virus) leads to aids, *ssrna- influenza, rna polymerase (from virus) makes less mutations than. Viroids-simpler and smaller than viruses: fragment of rna, hijack cells, infects primarily plant cells including citrus trees, potatoes, avocados. Immune system: 500 trillion bacteria on and in body make you a healthier individual, beneficial microbes, three lines of defense against microbial attack, non specific external barriers (innate, skin: physical barriers. Inhospitable environment for growth; dry dead cell at surface, sweat/ sebaceous glands: mucus membranes: respiratory and digestive tracts well defined. Inflammatory response, caused by large scale microbial invasion through wound: mast sells produce, store, and release histamine on demand, fever: response to microbes establishing major infection, slows down microbial reproduction, enhances immune system.
