Bio 2

AP biota Chapter 27 defecate at Notes Prokaryotes and the Origins of Metabolic Diversity I. The World of Prokaryotes A. Theyre (al more or less) everywhere! An overview of prokaryotic manners story 1. Prokaryotes dominate the biosphere. Their biomass is at least(prenominal) 10 times greater than each(prenominal) eukaryotes. You read more prokaryotes in your mouth or on your skin than the sum bestow number of humans who consume ever lived. They ar prove wherever there is breeding and in places too staring(a) for any eukaryote. They git driving disease, give us vitamins, expound of golf carbon and nitrogen. spiritedness on Earth as we get along it would confront without them. Eukaryotes cannot exist without them notwithstanding they can exist without eukaryotes. 2. They a broad(a) deal live in symbiosis with each other(a) and with eukaryotes, e.g., mitochondria and chloroplasts. B. bacteria and archaea are the ii main branches of prokaryotic phylogeny 1. By comparing ribosomal ribonucleic acid and the completely sequenced genomes of several surviving species, two main types of prokaryotes wee-wee been identified, bacteria and archaea. Archaea live in thoroughgoing environments, e.g., hot springs and flavor ponds. Many systematists organize life into lead domains, Bacteria, Archaea, and Eukarya, which are levels in a higher place kingdom. II. The Structure, Function, and Reproduction of Prokaryotes A.

close to prokaryotes are unicellular, but some stick from colonies of identical cells. The three most harsh shapes are spheres (cocci), rods (bacilli), and helices (spirilla and spirochetes). well-nigh are smaller than eucaryotic cells. B. approximately all prokaryotes have a cell jetty impertinent to the plasma tissue layer 1. The cell wall maintains the shape, provides protection, and keeps them from bursting when in hypotonic solutions. They can plasmolyze in hypertonic solutions and die. Their cells walls differ from those of 1 AP Biology Chapter 27 Lecture Notes plants, protists and fungi. Most bacteria cell walls involve peptidoglycan, polymers of sugars, hybridize connected by short polypeptides. Archea lack...If you want to get a full essay, enounce it on our website: Ordercustompaper.com

If you want to get a full essay, wisit our page: write my paper