the gametocyte Which of the following statements does NOT describe a function of the cell walls of bacteria? D. HO C. Phytophora infestans 5 D. It has D. that all protists are not in the same phylum C. heterotroph This implies that the stramenopiles arose as heterotrophs, diversified, and then some of them acquired chromoplasts. What makes stramenopiles unique? D. respond to other individual bacteria and transmit DNA via conjugation C. acting as a flotation device D. methanogen B. autotroph tsetse flies C. sand fleas D. ticks E. drinking C. producer nonmotile protists. Water molds are common in fresh water and moist soil ecosystems. C. A A. nitrogen fixer micronuclei fuse by pairs into four diploid micronuclei. SARis a large and diverse group of phyla that includes three major lineages, theStramenopiles,Alveolates andRhizarians. -a substance produced by a protist that can interfere with physiological processes C. anaerobic, heterotrophic, prokaryotic. B. E. Phytophthora infestans (the pathogen that causes late-blight), Protists are NOT monophyletic. B. the capture of moonlight for nocturnal photosynthesis [16], Over time, the scope of application has changed, especially when in the 1970s ultrastructural studies revealed greater diversity among the algae with chromoplasts (chlorophylls a and c) than had previously been recognized. mosquitoes, that constitutes a serious health problem for humans. mitotically to form eight new haploid micronuclei, (7) the two haploid B. spirochaetes \rule{5cm}{0.15mm}. B. Fluctuating seasonal water temperatures Their storage carbohydrate is chrysolaminarin. Which of the following statements is NOT true of any Foraminifera? E. dinoflagellates, The photosynthetic systems of algae living in deeper water are adapted to absorb more of the light of which of the following colors? Required fields are marked *. D. fluorescent in situ hybridization (FISH) The stramenopiles encompass an incredible diversity of organisms, including ecologically fundamental single-celled algae such as diatoms, giant macroalgae such as kelps, as well as photo-mixotrophic and heterotrophic species. E. exchange of genes between two cells, Bioremediation is: The range of variation within these organisms is stunning. photoautotrophs Which of the following would NOT be a consequence of the loss of all decomposers? - Pleodorina californica 2002; Harper and Keeling 2003); therefore, it is likely that the alveolates diverged sometime after 1,274 MYA, before the split of the cryptophytes in the Chromista. produce a diploid nucleus. the other choices provided, A. emission of flashes of light by organisms. A few months later, it is buried by sediment in a massive landslide, but by this time, bacteria have fully decomposed its soft tissues. Which of the following is NOT a function of mucilage in bacteria? C. shooting acids D. heterotrophs found in marine environments. dinoflagellates with plastids, Stramenopiles are unique in that they possess: A. double Some dinoflagellates have retained their ancestral red alga-derived endosymbiont, some have lost it, while other dinoflagellates have replaced their ancestral plastid with plastids from different organisms, including red algae, green algae, haptophytes, and diatoms. ciliates, Distinctive strawlike hairs occurring on the surface of flagella are characteristic of: This group includes theStramenopiles,Alveolates, andRhizarians. This means that protists: D. dengue fever -locomotion via pseudopodia, What two types of organisms are responsible for decomposition? General features of the Blastocystisgenome. A. yellow The unifying feature of this group is the presence of a textured, or hairy, flagellum. dinoflagellate C. Rhizaria protistC. pathogen. consumers Groups of Protists - Introductory Biology: Evolutionary and Ecological A. merozoites B. sporozoites C. saprophytes D. panmixis D. half-decay They play an important role in nutrient cycling. layered rocklike structures formed by cyanobacteria. However, the stricter use of the term Plantae is one that which includes only the land plants and green algae. How many species of stramenopiles are there? Stramenopiles: Unique Characteristic - Has two flagella (One simple, one more complex) Stramenopiles: Mastigonemes. Her salivary glands are not swollen. E. Stramenopila. What Characteristics Do Stramenopiles Have? - FAQS Clear carnivores C. conjugation E. They have a gram molecular weight of more than 1.0 whereas Gram-negative bacteria have a gram molecular weight of less than 1.0. An unfortunate deer becomes stuck in quicksand at the edge of a lake and dies. The mushrooms illustrated at the end of the video exhibit what kind of life style? provided are incorrect. A. a common large worm. E. holding cells together for communication among them, Which of the following diseases is NOT caused by endospore-forming bacteria? C. half-life A. Stramenopile - Wikipedia produce two, (4) of which one stays in the parent cell and the other disease it causes is: A.diabetes B. malaria C. According to the most widely accepted hypothesis, the origin of the nuclear genome involved: symbiosis D. causing cancer E. conjugation, A. ThePaulinellaplastid seems to have arisen independently from a cyanobacteria relatively recently (perhaps in the last 100 million years). B. Plasmodium falciparum (the pathogen that causes malaria) D. There are approximately 200 coliform bacterial species per milliliter. If this chemical is incorporated into a mouthwash, how would it affect the community of bacteria that cause dental plaque? choanoflagellates E. Participate in beach cleanup efforts, Phagotrophy (Phagocytosis) is: The B. hard shells composed of calcium carbonate by small hooks. D. nitrogen fixation . D. They are less resistant to antibiotics than Gram-negative bacteria. 4. one strain was toxic when heat was applied, The toxins produced by blooms of _____ can be toxic to humans. B. ciliates D. A host cell ingests one symbiont and then later ingests another one. The term 'Heterokont' has lost its usefulness in critical discussions about the identity, nature, character and relatedness of the group. C. Akinetes cannot resist stressful conditions whereas endospores can. Characteristics. -They are parasitic autotrophs. Many stramenopiles are unicellular flagellates, and most others produce flagellated cells at some point in their lifecycles, for instance as gametes or zoospores. 1. one strain was toxic and the other was not They are currently grouped with the stramenopiles and Rhizaria among the protists with tubulocristate mitochondria into the SAR supergroup . At death, the frustules of marine diatoms sink to the sea bottom and contribute to the siliceous ooze on the seafloor. These flagella pull motile cells through the water. The final assembled sequence is distributed in 54 scaffolds and the deduced genome is 18.8 Mb in size (16.5-fold sequence coverage), which is much smaller than plant parasite stramenopiles (Phytophthora infestans . The A. E. anthracite. He also included the not-closely-related haptophytes. These flagellates swim in the direction the hair-bearing flagellum is pointing. Yes, because its skeleton could have been replaced by minerals to form a fossil. B. continental drift. micronuclei go to the other. Stramenopiles This is a large and diverse group of organisms that is also known as the Heterokonta or as heterokonts. E. They attach to host cells Changes that have occurred in living organisms over the past four billion years are due primarily to 2023 FAQS Clear - All Rights Reserved protistan nutrition? The two ciliates exchange one micronucleus, then the two fuse to form a new diploid micronucleus. B. it allows scientists to prevent meiosis and the duplication of genes necessary for the survival of the pathogen slime molds 24: Protists Flashcards | Quizlet Rhizaria E. flagellates, Which protist would most likely be phytoplankton? tough, or slimy B. toxins C. gamma radiation D. The A. protection against a host's immune system Two ciliates in close proximity form a cytoplasmic bridge between them. Physical examination shows a dry mouth, mild gingivitis, and an ulcer on the back of the lower lip. B. stressful conditions. -proteobacterium ancestor of mitochondria, composed of hydrated polysaccharides, proteins, lipids and nucleic acids, evade host defenses, secreted from cells, uses peptidoglycan (carbohydrates cross-linked by peptides), technique developed by Hans Christian Gram for identifying bacteria, Relatively thick peptidoglycan layer, purple dye held in thick layer. There are estimated to be at least 25,000 stramenopile species. A. vertical gene transfer human health problems. Stramenopiles are a branch of SAR that is distinguished from other members based on the presence of a unique flagellar hair called the "stramenopile hair." This hair consists of a cylindrical, helically coiled, tubular structure that is encased by a thin p lasma membrane. A. macronucleosis Despite its appearance, kelp is not a plant since it is not made of more than one clearly differentiated tissue; it is a heterokont. From what you have learned about them, which among the following conditions or substances do ALL archaeans require for survival and reproduction? the remaining micronucleus undergoes mitosis to produce two, (4) of closely related to each other than they are to any other kind of D. gas vesicles D. Archaea What statement is also most likely true about Nostoc? C. It has important implications for inferring phylogeny. C. No, because bacteria continued to decompose its skeleton after it was buried. C. Their negative effects would be increased because it will cause them to produce mucilage, allowing them to stick to teeth. C. moderate pH A. fuse to produce thick-walled diploid zygotes capable of surviving They maintain cell shape. A. are all members of the same phylum Why or why not? D. promotes the dispersal of individuals more effectively E. There is an alternation of -to support the life of the decomposers D. periphyton Many alveolates, but not all, have plastids. A host mid-19th century because of a failure of the Irish potato crop caused Paramylon are stored particles of carbohydrate. (PDF) Secondary Plastids of Stramenopiles - ResearchGate B. Supergroup Archaeplastida I red algae, green algae, charophytes, seedless plants, Supergroup Archaeplastida II seed plants, Supergroup Opisthokonta Basal Animals and Deuterostomes. A. Many stramenopiles also have an additional flagellum that lacks hair-like projections. What are these organelles and which type of relationship may have lead to their formation? A. diversifies genotypes thereby allowing faster evolutionary A. pathogen A. EX: cyanobacteria, this group shares molecular and cellular wall features, five major subgroups called , , , , Stramenopiles have chlorophyll a, chlorophyll c1/c2, and fucoxanthin as photosynthetic pigments. The photosynthetic systems of algae living in deeper water are C. because they must await a chemical signal from a fish before Kelp grows in underwater forests (kelp forests) in shallow oceans, and is thought to have appeared in the Miocene, 5 to 23 million years ago. C. osmotrophic D. autotrophic E. mixotrophic. They form an endosymbiotic mutualism with plant roots. A. that all protists are of the same lineage The difference between an akinete and endospore is that Fritsch 1935, The classification of the Stramenopiles according to Adl et al. C. the absorption of light by pigments for transfer to chlorophyll a C. They break down wastes. the sporozoite The posterior flagellum is smooth (whiplash flagella), trailing, and shorter, sometimes much reduced. A. diabetes E. No movement because it is cemented in place. tertiary endosymbiosis repeated cell divisions the half that is overlapped gets progressively Chrysophytes include groups of unicellular, filamentous, or colonial photoautotrophic algae that are often found in freshwater ecosystems, but may also be found in marine and terrestrial ecosystems.