Microbial Life: Prokaryotes and Protists - Renz Science

Figure 16.3B16.4 Prokaryotes have unparalleled nutritionaldiversityEndospore Prokaryotes exhibit much more nutritional diversitythan eukaryotes. Two sources of energy are used.– Phototrophs capture energy from sunlight.– Chemotrophs harness the energy stored in chemicals.© 2012 Pearson Education, Inc.16.4 Prokaryotes have unparalleled nutritionaldiversity Two sources of carbon are used by prokaryotes.– Autotrophs obtain carbon atoms from carbon dioxide.– Heterotrophs obtain their carbon atoms from theorganic compounds present in other organisms.16.4 Prokaryotes have unparalleled nutritionaldiversity The terms that describe how prokaryotes obtainenergy and carbon are combined to describe theirmodes of nutrition.– Photoautotrophs obtain energy from sunlight and usecarbon dioxide for carbon.– Photoheterotrophs obtain energy from sunlight but gettheir carbon atoms from organic molecules.– Chemoautotrophs harvest energy from inorganicchemicals and use carbon dioxide for carbon.– Chemoheterotrophs acquire energy and carbon fromorganic molecules.© 2012 Pearson Education, Inc.© 2012 Pearson Education, Inc.Figure 16.4Figure 16.4_1SunlightPhotoautotrophsENERGY SOURCEChemicalsChemoautotrophsCARBON SOURCEOrganic compounds CO 2OscilliatoriaPhotoheterotrophsRhodopseudomonasUnidentified “rock-eating” bacteriaChemoheterotrophsA Bdellovibrio attacking alarger cellPhotoautotrophsOscilliatoria5