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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
PowerPoint® Lecture Slide Presentation prepared by Christine L. Case
M I C R O B I O L O G Ya n i n t r o d u c t i o n
ninth edition TORTORA FUNKE CASE
Part C12The Eukaryotes:
Fungi, Algae, Protozoa, and
Helminths
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The Protozoa
Table 12.1
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Protozoa
Eukaryotic
Unicellular
Chemoheterotrophs
Vegetative form is a
trophozoite.
Asexual reproduction is by
fission, budding, or schizogony.
Sexual reproduction by
conjugation.
Some produce cysts.Figure 12.16
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Archaezoa
No mitochondria
Multiple flagella
Giardia lamblia
Trichomonas vaginalis (no
cyst stage)
Figure 12.17b–d
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Microspora
No mitochondria
Nonmotile
Intracellular parasites
Nosema
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Amoebozoa
Move by pseudopods
Entamoeba
Acanthamoeba
Figure 12.18a
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Apicomplexa
Nonmotile
Intracellular parasites
Complex life cycles
Plasmodium
Babesia
Cryptosporidium
Cyclospora
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2
3
67
8
Plasmodium
Figure 12.19
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Cryptosporidium
Figure 25.19
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Figure 12.20
Ciliophora (Ciliates)
Move by cilia
Complex cells
Balantidium coli is the only human parasite.
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Euglenozoa
Move by flagella
Photoautotrophs
Euglenoids
Chemoheterotrophs
Naegleria: Flagellated and amoeboid forms; causes
meningoencephalitis.
Trypanosoma: Undulating membrane, transmitted by
vectors.
Leishmania: Flagellated form in sand fly vector,
ovoid form in vertebrate host.
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Euglenozoa
Figure 12.21
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Dinoflagellates
Why are these
studied with algae
and protozoa?
Figure 12.14
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Slime Molds
Cellular slime molds
Resemble amoebas,
ingest bacteria by
phagocytosis.
Cells aggregate into
stalked fruiting body.
Some cells become
spores.
Plasmodial slime molds
Multinucleated large
cells.
Cytoplasm separates
into stalked sporangia.
Nuclei undergo
meiosis and form
uninucleate haploid
spores.
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Cellular Slime Mold
Figure 12.22
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Plasmodial Slime Mold
Figure 12.23 (1 of 2)
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Slime Molds
Why are slime molds
included with the
Amoebozoa?
Figure 12.23 (2 of 2)
