Prokaryotic Domains Cells without nuclei 23 April 20141Prokaryotic-lab.ppt.

Prokaryotic Domains

Cells without nuclei

23 April 2014 1Prokaryotic-lab.ppt

Prokaryotic Domains

• Cells lack (never evolved) nuclei

• Mostly small– Eukaryotic cells 7-20 m

– Prokaryotic cells 0.5-10 m


Prokaryotic Diversity


• Cell shapes– Sphere = coccus– Rod = bacillus– Spiral = spirillum


• Cell walls– Gram positive

• Thick cell wall stains purple

– Gram negative• Thin cell wall does

not stain purple


Photosynthetic Bacteria

• Cyanobacteria (blue-green algae)– Anabaena

– Oscillatoria

– Gleocapsa


Diversity of Prokaryotes

• Shapes

• Gram positive or negative

• Heterotrophic or photosynthetic

• then ???



• Respiration in Eukaryotes– Glucose + O2 CO2 + H2O + energy

– Glucose + [No O2] lactic acid + energy

– Glucose + [No O2] ethyl alcohol + CO2 + energy



• Respiration in Prokaryotes– Glucose + O2 CO2 + H2O + energy

– Glucose + [No O2] lactic acid + energy

– Glucose + [No O2] ethyl alcohol + CO2 + energy



• Respiration in Prokaryotes– [carbon source] + H2S + O2 CO2 + S2 (or

H2SO4) + energy

– [carbon source] + N2 NH3 + energy

– [carbon source] + NH3 + O2 CO2 + HNO2 + energy

– [carbon source] + Fe+2 + H2O + O2 CO2 + Fe+3 (rust) + OH- + energy

– And more !!!!23 April 2014 9Prokaryotic-lab.ppt

Photosynthetic Bacteria

• Cyanobacteria (blue-green algae)– Anabaena (#29)

– Oscillatoria

– Gleocapsa




• Cell shapes (#30)

– Sphere = coccus– Rod = bacillus– Spiral = spirillum

Review for Lab Final• All labs after midterm (Spring Break)

Phyla & Classes of invertebrate animals • Lancelet

• Clam dissection

• Earthworm, nematodes, flatworms

• tapeworm

• Cnidaria, living & on slides

Kingdom Fungi, PhylaProtista, living and on slidesProkaryotes (today)

23 April 2014 Prokaryotic-lab.ppt 12

Prokaryotic Domains Cells without nuclei 23 April 20141Prokaryotic-lab.ppt.

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