BIO260H1 Lecture Notes - Lecture 1: Rifampicin, Peptidoglycan, Microbiological Culture
Document Summary
Lecture 1 bacterial genetics: understanding & working with bacterial genes. B and c are closely related: however, far away from a. Bacteria is 1 or these 3 domains. Plot of relatedness: length of branch = how much species has diverged from neighbor. We"(cid:396)e euka(cid:396)(cid:455)otes: have organelles envlosed in membranes, we"(cid:396)e (cid:373)o(cid:396)e (cid:272)losel(cid:455) (cid:396)elated to plant/fungus than bacteria. P(cid:396)oka(cid:396)(cid:455)otes (cid:894)(cid:271)a(cid:272)te(cid:396)ia a(cid:374)d a(cid:396)(cid:272)haea(cid:895) do(cid:374)"t ha(cid:448)e membrane enclosed structures: no mitochondria, chloroplasts, and dna not in nucleus. All intertwined in ecosystems: other elements in ecosystems -> viruses. Vi(cid:396)us is (cid:271)e(cid:455)o(cid:374)d (cid:1007) do(cid:373)ai(cid:374)s of life (cid:271)e(cid:272)ause the(cid:455) (cid:272)a(cid:374)"t (cid:396)epli(cid:272)ate (cid:449)ithout host (cid:272)ell. Regulate processes like sulfur and nitrogen cycle -> how they enter ecosystem: provide regularly accessible sulfur and nitrogen. Nitrogen cycle- ammonification -> fixes nitrogen in soil and make it available to plants. Live in community known as microbiome: huge source of carbon. Assemblage of microbes that reside in specific niche. Microbial community of a particular habitat or environment.
