Microbial Life: Prokaryotes and Protists - Renz Science

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Figure 16.4_2Figure 16.4_3PhotoheterotrophsChemoautotrophsUnidentified “rock-eating” bacteriaRhodopseudomonasFigure 16.4_4ChemoheterotrophsA Bdellovibrio attacking a larger cell16.5 CONNECTION: Biofilms are complexassociations of microbes Biofilms– are complex associations of one or several species ofprokaryotes and– may also include protists and fungi. Prokaryotes attach to surfaces and form biofilmcommunities that– are difficult to eradicate and– may cause medical and environmental problems.© 2012 Pearson Education, Inc.16.5 CONNECTION: Biofilms are complexassociations of microbes Biofilms are large and complex “cities” of microbesthat– communicate by chemical signals,– coordinate a division of labor and defense againstinvaders, and– use channels to distribute nutrients and collect wastes.16.5 CONNECTION: Biofilms are complexassociations of microbes Biofilms that form in the environment can bedifficult to eradicate. Biofilms– clog and corrode pipes,– gum up filters and drains, and– Coat the hulls of ships.© 2012 Pearson Education, Inc.© 2012 Pearson Education, Inc.6
Figure 16.516.6 CONNECTION: Prokaryotes help clean upthe environment Prokaryotes are useful for cleaning up contaminantsin the environment because prokaryotes– have great nutritional diversity,– are quickly adaptable, and– can form biofilms.© 2012 Pearson Education, Inc.16.6 CONNECTION: Prokaryotes help clean upthe environment Bioremediation is the use of organisms to removepollutants from– soil,– air, or– water.16.6 CONNECTION: Prokaryotes help clean upthe environment Prokaryotic decomposers are the mainstays ofsewage treatment facilities.– Raw sewage is first passed through a series of screensand shredders.– Solid matter then settles out from the liquid waste,forming sludge.– Sludge is gradually added to a culture of anaerobicprokaryotes, including bacteria and archaea.– The microbes decompose the organic matter into materialthat can be placed in a landfill or used as fertilizer.© 2012 Pearson Education, Inc.© 2012 Pearson Education, Inc.16.6 CONNECTION: Prokaryotes help clean upthe environmentFigure 16.6A Liquid wastes are treated separately from thesludge.– Liquid wastes are sprayed onto a thick bed of rocks.– Biofilms of aerobic bacteria and fungi growing on therocks remove much of the dissolved organic material.– Fluid draining from the rocks is sterilized and thenreleased, usually into a river or ocean.Rotatingspray armRock bed coatedwith aerobicprokaryotesand fungi© 2012 Pearson Education, Inc.Liquid wastesOutflow7
Page 1 and 2: Chapter 16Microbial Life: Prokaryot
Page 3 and 4: Figure 16.2A_2Figure 16.2A_3Spiroch
Page 5: Figure 16.3B16.4 Prokaryotes have u
Page 9 and 10: 16.8 Archaea thrive in extreme envi
Page 11 and 12: Figure 16.9C16.9 Bacteria include a
Page 13 and 14: 16.12 CONNECTION: Bacteria can be u
Page 15 and 16: 16.13 Protists are an extremely div
Page 17 and 18: 16.15 Chromalveolates represent the
Page 19 and 20: Figure 16.17AFigure 16.17A_1Figure
Page 21 and 22: 16.18 Some excavates have modified
Page 23 and 24: Figure 16.19C16.20 Archaeplastids i
Page 25 and 26: Figure 16.20C_216.21 EVOLUTION CONN
Page 27: You should now be able toFigure 16.

Microbial Life: Prokaryotes and Protists - Renz Science

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