PPT-Chapter 16 The Origin and Evolution of Microbial Life: Prokaryotes and Protists

0 PROKARYOTES 167 Prokaryotes have inhabited Earth for billions of years Prokaryotes are the oldest lifeforms And remain the most numerous and widespread organisms Colorized SEM 650 . 1. 19. Copyright © McGraw-Hill Global Education Holdings, LLC. Permission required for reproduction or display.. Introduction to . Microbial . Taxonomy. Taxonomy. science of biological classification. Life Science – January 2013- Hooper. What is a Protist?. Protists. are eukaryotes (organisms whose cells have a nucleus). that cannot be classified as plants, animals, or fungi.. Additionally, all protists live in moist surroundings.. Animal-Like Protists:. The Protozoa. Evolutionary Perspective of the Protists. The protists are a polyphyletic group that arose about 1.5 billion years ago when the Archaea and Eukarya diverged.. Our understanding of the evolutionary relationships among protists is currently in flux . THE ORIGIN AND EVOLUTION OF MICROBIAL LIFE. HOW DID LIFE ORIGINATE?. SPONTANEOUS GENERATION. LIFE ARISING FROM NON-LIVING MATTER. LONG BELIEVED AS THE ACCEPTED EXPLANATION OF ORIGINATION OF LIFE. EXPERIMENTS EVENTUALLY SHOWED IT TO BE IMPOSSIBLE. Allen Hainline. Ratio Christi Philippines. omega_sw@yahoo.com. www.OriginsDiscussion.info. Outline. “After reading . Origins of Life. … it is clear [chemical] evolution could not have occurred” Nobel Prize . as Branches of. the Tree of Life. Overview. Plants, fungi and animals are the three kingdoms of multicellular organisms. .. Land plants are known to have evolved from organisms similar to some living green algae. “…sparked by just the right combination of physical events & chemical processes…”. Bacteria. Archae-. bacteria. Animalia. Fungi. Protista. Plantae. 4500. 4000. 3500. 3000. 2500. 2000. 500. Protists. Chapter 16. How Ancient Bacteria Changed the World. Mounds of rock found near the Bahamas. Contain photosynthetic prokaryotes. 0. Stromatolites in northern Canada . Figure 16.0Ax1. Fossilized mats 2.5 billion years old mark a time when photosynthetic prokaryotes . Protists. Chapter 16. How Ancient Bacteria Changed the World. Mounds of rock found near the Bahamas. Contain photosynthetic prokaryotes. 0. Stromatolites in northern Canada . Figure 16.0Ax1. Fossilized mats 2.5 billion years old mark a time when photosynthetic prokaryotes . Department of Anthropology, George Washington University, Washington DC, USA. 334 macropomaClupavus maroccanusSorbininardus apuliensis and Tischlingerichthys viohli(Diogo, 2007; see Fig. 1). This thus Theories of origin of life. What is life?. The condition that distinguishes . animals and plants. from . inorganic matter. , including the capacity for . growth. , . reproduction. , . functional activity. Microbial . BioDiversity. Dr. Rita Mahapatra. Assistant Professor. Neotech. College of applied Science and Research, . Virod. , Vadodara. Microbial biodiversity is defined as the variability among microorganisms. . All three biological domains include microbial organisms (or “microorganisms”). Although microorganisms include some of the smallest organisms, they play critical roles in the evolution of life on our planet and in the ecology of both terrestrial and marine environments. Eli Minkoff and Jennifer Hood-DeGrenier. The Darwinian paradigm reorganized biological thought. Pre-Darwinian thought. The “Chain of Being”. Paley and “Natural Theology”. Lamarck: single-file evolution; strong environmental influence.