Protists: Excavata and Its Subgroups

Eukaryotic organisms, mostly unicellular, some multicellular and are endosymbiotic. They are NOT bacteria.

<p>Organisms that absorb or ingest organic molecules (don't make their own food)</p> Signup and view all the answers

<p>Organisms that use both photosynthesis and heterotrophic nutrition.</p> Signup and view all the answers

<p>Symbiotic relationship where one organism lives inside another.</p> Signup and view all the answers

<p>Excavata, SAR, Archaeplastida, Unikonta</p> Signup and view all the answers

<p>An excavated feeding groove on one side of the cell body.</p> Signup and view all the answers

<p>Diplomonads, Parabasalids, Euglenozoans</p> Signup and view all the answers

<p>Parasitic protists with reduced mitochondria (mitoses), two equal nuclei, and multiple flagella. They get energy from anaerobic pathways since they don't have functional electron transport chains - they can't get energy from carbs and organic molecules via oxygen.</p> Signup and view all the answers

<p>A flagellate diplomonadic excavata protozoa that causes intestinal infections in mammals.</p> Signup and view all the answers

<p>Parasitic protists with hydrogenosomes that release hydrogen as a byproduct of doing anaerobic respiration.</p> Signup and view all the answers

<p>A flagellate parabasalidic excavate protozoa that is an STD that lives along the lining of the reproductive and urinary tract by moving its flagella and changing its cell membrane.</p> Signup and view all the answers

<p>A diverse group of protists including parasitic (predatory heterotrophs) and photosynthetic autotrophs, and mixotrophs.</p> Signup and view all the answers

<p>A euglenozan excavata protist, kinetoplastid that causes sleeping sickness.</p> Signup and view all the answers

<p>Stramenopiles, Alveolates, Rhizarians</p> Signup and view all the answers

<p>A group of protists part of SAR with hairy flagella, includes algae. They are characterized by having two flagella: one with hair-like projections (stramen = straw) and the other smooth (pilos = hair).</p> Signup and view all the answers

<p>Diatoms, Golden algae, Brown algae</p> Signup and view all the answers

<p>Unicellular algae, photosynthetic with glass-like silicon dioxide cell walls. They live in oceans and lakes, and when they die, they decompose to the bottom of the ocean floor.</p> Signup and view all the answers

<p>When they die, they decompose to the ocean floor, and the time it takes for the carbon on the bottom to reach the ocean affects the carbon level. Also, their photosynthetic activity affects the carbon level.</p> Signup and view all the answers

<p>Unicellular algae with yellow and brown carotenoids. They have two flagella, one at each end of the cell, and are both photosynthetic and mixotrophic.</p> Signup and view all the answers

<p>Protists part of the SAR group, with membrane-enclosed sacs (alveoli) under their plasma membrane.</p> Signup and view all the answers

<p>Dinoflagellates, Ciliates, Apicomplexans</p> Signup and view all the answers

<p>Alveolate SAR protists with two flagella in grooves reinforced by cellulose plates.</p> Signup and view all the answers

<p>They can cause explosive growth, sometimes producing toxins that can harm fish and invertebrates. Humans consuming these affected organisms can also suffer illness.</p> Signup and view all the answers

<p>Alveolate SAR parasitic protists that spread infectiously as sporozoite cells.</p> Signup and view all the answers

<p>An apicomplexan alveolate SAR parasitic protist that causes malaria and lives in humans and mosquitos.</p> Signup and view all the answers

<p>Reproductive cycle involving both haploid and diploid stages.</p> Signup and view all the answers