BIO 1130 Lecture Notes - Lecture 8: Gram-Negative Bacteria, Gram-Positive Bacteria, Antimicrobial Resistance

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Morphological diversity: size, shape, mobility, metabolism (problem with giving species and genus names with bacteria) instead characterized by the proteins on their cell walls ex. In the bacterial cell: flagellum, nucleoid (dna concentrated in one area), capsule, cytoplasm (suspending structures), ribosomes, plasmid (circular dna; important for genetic variability, plasma membrane & cell wall (peptidoglycan layer), pili (movement). Gram positive (destroyed peptidoglycan layer) to see if treatable with penicillin. Gram negative (has a second outer me(cid:373)(cid:271)(cid:396)a(cid:374)e(cid:895) the(cid:396)efo(cid:396)e stai(cid:374) (cid:449)o(cid:374)"t (cid:396)ea(cid:272)t (cid:449)ith peptidogly(cid:272)a(cid:374) laye(cid:396) the(cid:396)efo(cid:396)e pe(cid:374)i(cid:272)illi(cid:374) (cid:272)a(cid:374)"t (cid:271)e used agai(cid:374)st it. We now changed to looking at genomic content (resulting in genetic variability) and not. Shaft with 2 (gram positive) donuts or 3 donuts (gram negative). When a very first event arose, flagellum & wall from a single common universal common ancestor. Pili= cytoplasmic bridge connecting to bacteria together (allowing genetic exchange of organisms, only facilitates exchange) Binary fission: one to two & point mutations.