BIOL 1030 Lecture Notes - Lecture 4: Gut Flora, Spirochaete, Alphaproteobacteria

• School: Auburn University
• Department: Biology
• Course: BIOL 1030
• Professor: Debbie Folkerts

Document Summary

Internal membrane looks like chloroplast: stromatolites calcium containing. Serial endosymbiotic hypothesis for origin of chloroplasts and other membrane organelles where ancestors of eukaryotic cells engulfed cyanobacteria-like cells and survived in symbiosis. Endosymbiosis->relationship between two species in which one organism lives inside the cell or cells of another organism. Largest gram negative group: split up by dna, escherischia coli (e. coli) found in colon a. i. Inner membrane looks like mitochondria (ring-shaped dna) b. iii. Hypothetical origin of mitochondria: n-fixing bacteria c. i. Example is limestone carried by tick: gram positive groups, chlamydias all are animal disease, mycoplasmas b. i. Domain: eukarya (true nucleus: membrane bound organelles, ex: plants, fungi, protists, and animals, reproduction, sexual, usually in addition with asexual depending on environmental factors, different life cycles, meiosis involves change in chromosome number a. i. Produce one set of chromosomes from two a. iii. Haploid (half) n: humans have 23.