BIOL309 Lecture 2: Microbial Ecology
Document Summary
Community 1: can undergo photosynthesis, using light energy to make organic matter (green algea and cyanobacteria) Community 2: made up of consumers (some of them are aerobes, consuming organic matter to make carbon and water) Microbe can conduct more than 1 type of metabolism. Glucose, food (organotroph), or nh3, h2, s0 (lithotroph)] ---- (catabolic reactions, e- flow) --- an electron acceptor [o2 (aerobic respiration), alternate electron acceptor (anaerobic respiration), internal organic electron acceptor (fermentation: organic c source [ex. Co2 (autotroph) ------ (biosynthetic (anabolic) reactions) --- building blocs (sugars, amino acids) to built cellular components (carbohydrates, proteins, lipids, nucleic acids: example: Wimpy gains energy, creates new biomass and excretes carbon dioxide, water, and other metabolic waste products (living as aerobic chemoorganotrophs) E. coli can also grow without oxygen (anaerobic respiration or by fermentation) but also excretes the same things: chemoorganotrophs (majority of microbes) also called organotrophs or heterotrophs. Electron source organic electron donor (same as carbon source)
