Chapter_28_Eukaryotic_Diversity - Three-domain system...

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Unformatted text preview: Three-domain system: Bacteria, Archaea, Eukarya Five Protist Candidate Kingdoms: Archaezoa, Euglenozoa, Alveolata, Stramenopila, Rhodophyta Protist Nutritional Diversity 1. Protozoa – ingestive/animal-like 2. absorptive/funguslike 3. Algae – photosynthetic/plantlike Overview of Protists Eukaryotes Most are unicellular Most are aerobic in metabolism (use mitochondria for cellular respiration) Base of food chains Account for at least ½ photosynthetic production of organic material globally 5 kingdoms – Archaezoa, Archaezoa: Lack mitochondria – may represent early eukaryotic lineages Diplomonads – 2 nuclei, no plastids, cytoskeleton; Giardia Giardia Euglenoza: Autotrophic and heterotrophic flagellates Euglenoids – anterior pocket, paramylum; Euglena Kinetoplastids – single large mitochondrion, symbiotic, kinetoplast (houses extranuclear DNA); African sleeping sickness (spread by fly bites) Euglenoid Kinetoplastid 8 3 Features Unique to Eukaryotes:- membrane-enclosed nucleus - mitochondria - cholorplasts...
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This note was uploaded on 04/01/2012 for the course BIO 141 taught by Professor Dr.cafferty during the Spring '11 term at Emory.

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Chapter_28_Eukaryotic_Diversity - Three-domain system...

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