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18 Cards in this Set
- Front
- Back
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Protists
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-All eukaryotes EXCEPT greenplants,animals & fungi
-paraphyletic group -Are a grouping of CONVENIENCE, NOT a natural evolutionary grouping -No single synapomorphy unites all protists |
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Chloroplasts
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-Genomic sequencing fully supports bacterial origin
-Endosymbiont origin of original chloroplast genome -Some lineages have chloroplats with FOUR membranes -supports a secondary Endoymbiosis |
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Monophyletic Group
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All the descendants of a single common ancestor
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Paraphyletic Group
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Some, BUT NOT ALL descendants of a single common ancestor
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Red Tides
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-Massive "blooms of dinoflagellates
-Have high concentration of red pigments, ocean can turn red -Dinoflagellates produce a toxin to defend against copepod predators -Paralytic shellfish poisoning |
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Irish Potato Famine
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-over 1,000,000 deaths.
-Agent of "blight" was Phytophthora infesans |
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Malaria
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-Kills over 1,000,000 people each year, mostly young children
-Plasmodium is the agent. -control strategies target mosquito vectors |
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Nuclear Membrane
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-separates DNA replication and repair from translation
-allows for RNA processing -one hypothesis: derived from infolding of the plasma membrane |
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Organelles
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-The mitochondrion and chloroplast genomes are bacterial in structure
- Endosymbiosis Hypothesis: -both derived originally from bacteria engulfed by a primate eukaryote |
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Diatom
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Silicon oxide (glass) tests
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Dinoflagellates
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Cellulose-based structures
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Foraminifera
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Calcium carbonate tests
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Photosynthesis
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Make your own food
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Ingestive feeding
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-Pseudopodia to engulf food
-Ciliary currents to sweep food into gullet |
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Absorptive feeding
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-Take food directly through membrane
-decomposers -parasites |
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Amoeboid motion
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-Crawling sort of movement, stretching out arms in front of the other and pulling forward
- moves and turns at a medium pace |
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Swimming vis flagella
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-Using flagella as sort of a propeller
-moves fast but cant turn fast |
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Swimming via cilia
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- Moves by using little hair like cilia
-moves slowly but turns quickly |
