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10 Cards in this Set
- Front
- Back
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Define protist.
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Unicellular eukaryotic organisms found in a drop of pond water.
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What is the difference between photoautotrophs and heterotrophs?
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Photoautotrophs contain chloroplasts while heterotrophs absorb organic material or ingest larger food particles.
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What is a mixotroph?
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Combines photosynthesis and heterotophic nutrition.
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What is endosymbiosis?
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Certain unicellular organisms engulfed other cells, which became endosymbionts and ultimately organelles in the host cell.
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Define secondary endosymbiosis.
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Red algae and green algae undergo this process during eukaryotic evolution. They were ingest in the food vacuole of a heterotrophic eukaryote and became endosymbionts.
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What are diplomonads?
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Have two equal-sized nuclei and multiple flagella.
Giardia intestinalis is a parasite that inhabits the intestine of mammals. Lack an electron transport chain. |
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What are parabasalids?
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The protists are trichomonads.
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Euglenozoans?
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Diverse clade that includes predatory heterotrophs, photosynthetic autotrophs, and pathogenic parasites. Crystalline rod of unknown function and disk-shaped mitochondrial cristae.
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Kinetoplastids?
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Single, large mitochondrion that contains an organized mass of DNA called a kinetoplast. Free-living consumers of prokaryotes in freshwater, marine, and moist terrestrial ecosystems. They parasitize animals, plants, and other protists.
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Euglenid?
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Pocket at one end of the cell from which one or two flagella emerge. Many specifes are autotrophic but when sunlight is unavailable they can be heterotrophic. Other euglenids engulf prey by phagocytosis.
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