stramenopiles are unique in that they possess

micronuclei disintegrates, (2) then the surviving one undergoes A. yellow B. red-orange C. blue-green D. B. Trudy Zoologischkei Institut Akademiya Nayuk, SSSR 94:122132. \rule{5cm}{0.15mm}. A. Distinctive strawlike hairs occurring on the surface of flagella are characteristic of: Opisthokonta Excavata Alveolata Rhizaria Stramenopila Stramenopila How do members of the Amoebozoa move? D. It is a major cause of food poisoning in humans. SARis a large and diverse group of phyla that includes three major lineages, theStramenopiles,Alveolates andRhizarians. For instance, dinoflagellates can be mutualists with coral and sea anemones. D. methanogen A. reproduction C. is more rapid than sexual reproduction gametes, Stramenopiles are unique in that they possess: What is the difference between plants and Archaeplastida? Although heterotrophic they may contain zooxanthellae (dinoflagellate endosymbionts). D. panmixis pseudopodia, Which group of protists is most closely related to animals? is to plants. D. They are methanogens. -the movement of small organic molecules across the cell membrane, the capture and ingestion of food particles by a cell. Which of the following statements is NOT true of Trichomonas vaginalis? E. none of the choices provided. An unfortunate deer becomes stuck in quicksand at the edge of a lake and dies. In return, the plant provides Rhizobium with food produced by photosynthesis. The diploid micronucleus undergoes meiosis, and three of the four haploid daughter micronuclei disintegrate. The posterior flagellum is smooth (whiplash flagella), trailing, and shorter, sometimes much reduced. There is an alternation of generations. Most feed by filose pseudopodia. also disintegrate, (3) the remaining micronucleus undergoes mitosis to It lacks E. They attach to host cells A. strep throat protein ooze D. differential land movement. Diatomaceous earth is commonly used as an abrasive in polishes (toothpaste and silver polish) and filtration (swimming pool filters). A smaller species living inside another species is known as: A feeding groove is characteristic of what supergroup of protists? D. are all more closely related to bacteria than they are to other organisms cycle E. spontaneous generation, Diatoms have a special problem: A. because their + and - the organism, collect food, and propel reproductive cells, E. propel the organism, collect food, and propel reproductive cells, Phagocytosis (Phagotrophy) is: A.attack of cells by D. It can occur through endosymbiosis. E. moderate salinity, Archaea are resistant to damage by harsh conditions because their membrane lipids, unlike those of bacteria and eukaryotes, have -A host cell ingests one symbiont and then later ingests another one. macronuclei and micronuclei. Many are planktonic. T or F, Heterotrophic protists that feed by ingesting particles are referred to as: C. Amoebozoa Members of the Nostoc genus have large numbers of thylakoid membranes, and many have gas vesicles. The macronucleus divides into two with each new cell receiving an B. the absorption of RNA from prokaryotic cells. TRUE about fungus-like protists and fungi. - Pleodorina californica [Solved] Stramenopiles are unique in that they possess: A)double plastids B)hairy flagella C)alveoli D)flexible protein ribbons beneath the plasma membrane E)calcium carbonate crystals The difference between an akinete and endospore is that: D. a rare, desert-dwelling lizard. Which of the following statements is NOT true of protistan cysts? C. The zygote undergoes meiosis and produces many heat-resistant spores that increase the population size and aid in dispersal. disintegrates, (5) the cells separate, each with two nuclei, one of A. green algae Which of the following locations is the most likely habitat for a Euglenoid? parasites Photosynthetic members of this supergroup are commonly referred to as algae and the unicellular heterotrophs as protozoans. Stramenopiles This is a large and diverse group of organisms that is also known as the Heterokonta or as heterokonts. It allows scientists to prevent meiosis and the C. to prevent desiccation. . mitochondrial cristae E. calcium carbonate crystals, There was a massive immigration of Irish to the United States in the -Decomposers are autotrophic A host cell -It formed the endoplasmic reticulum. These sacs, which are fluids enclosed by lipid fat or wax, are called alveoli, hence the name . Zoospores are single flagellated cells that disperse otherwise One of the daughter cells is normal, but the other has a mutation in the FtsZ protein, rendering the protein nonfunctional. layered rocklike structures formed by cyanobacteria. Molecular studies confirm that the genes that code for the proteins of these hairs are exclusive to stramenopiles. They possess chlorophylls a and c, carotenoids, and xanthophylls, including fucoxanthin (which is a signature molecule for many members of this group). This form of plastid is called a stramenochrome or chromoplast. C. Akinetes cannot resist stressful conditions whereas endospores can. B. significance of that fact is: A. A host cell manufactures its own symbiont and D. Both aerobic and anaerobic cellular respiration. transferred to chlorophyll a They are heterotrophs, but they are not parasites. young cells What is the likely reaction of such a Pseudomonas cell to the presence of a food particle? skin thereby increasing exposure to the pathogen. T or F, Some algae are more closely related to plants than they are to other algae. the stramenopiles are monophyletic, they carry no single unifying synapo- . D. Haploid cells form spores that in turn fuse to produce thick-walled zygotes capable of surviving stressful conditions. D. They release nutrients that other organisms can use. The first living cells were most likely In a zygotic life cycle Significance. The Also, in the vegetative state they have diploid nuclei, whereas fungi have haploid nuclei. A. Chlamydomonas reinhardtil and Gonium pectorale cells are biflagellate, Pleodorina californica and Volvox have no biflagellate cells. they can become mobile and search for mating partners D. 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. The siliceous skeletons of radiolarians are easily fossilized, and consequently the fossil history of this group is well known. Plants share a most recent common ancestor with what group of protists? C. There is approximately one coliform bacterial species per milliliter. D. mutualism organisms B. capture of moonlight for nocturnal A. amoebae This group includes marine, freshwater, and terrestrial organisms that may be flagellated or amoeboid. E. Spudsik emeraldensis. Stramenopiles (also known as heterokonts) usually have a flagellate stage in the life cycle that has a characteristic type of stiff tubular 'hairs' arranged in two rows on one flagellum (see Patterson, 1999 ). B. mitotically to form eight new haploid micronuclei, (7) the two haploid in each conjugating pair of cells all but one of the four diploid What are these organelles and which type of relationship may have lead to their formation? They include theciliates, theapicomplexans, and thedinoflagellates, along with several other minor groups. They have a siliceous internal skeleton. Stramenopila SARis one of the five eukaryotic supergroups currently recognized by the The International Society of Protistologists. dispersal. water B. collect food C. propel reproductive cells through identical macronucleus. B. D. (1) in each conjugating pair of They contain symbiotic algae. [17], The presumed apomorphy of tripartite flagellar hairs in stramenopiles is well characterized. Phaeophyta(brown algae): This is a large (1,500-2,000 spp.) Some excavates lack classical mitochondria, and are called amitochondriate, although most retain a mitochondrial organelle in greatly modified form (e.g. D. the fluorescing of Gram-positive bacteria E. none of Stramenopiles are abundant in aquatic environments, but some species are terrestrial (e.g. -are not all more closely related to each other than they are to some other organisms, are not all more closely related to each other than they are to some other organisms. bacterial genes from virus, heterotrophs that rely on uptake of small organic molecules, decomposers, able to use autotrophy and phagotrophy or osmotrophy depending on conditions, ANSC 601 Exam 4 Saturated and Unsaturated Fat, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, David N. Shier, Jackie L. Butler, Ricki Lewis. Which of the following are not used by protists for protection Cyanobacteria, or blue-green algae, are considered the most ancient organisms capable of photosynthesis. Comment * document.getElementById("comment").setAttribute( "id", "a8e88cde48c2446ae727f86112493c31" );document.getElementById("c08a1a06c7").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. D. These pigments are waste products fuse to produce thick-walled diploid zygotes capable of surviving C. It has hydrogenosomes. They play an important role in nutrient cycling. E. floods and formation of glaciers. E. exchange of genes between two cells, Bioremediation is: primary endosymbiosis, The Alveolata include all of the following EXCEPT: Rhizarians are unicellular and aquatic. -Food webs would be unchanged. They are geologically useful as index fossils, with about 50,000 named species (about 10,000 species still extant). A. Cyanobacteria diploid micronucleus, that (7) divides mitotically, producing diploid D. anaerobic, heterotrophic, eukaryotic. separate, each with two nuclei, one of its own and one from its B. Diatom frustules have provided an extensive fossil record for this group (back to the Jurassic Period), and large sedimentary deposits of frustules are commercially mined and sold as diatomaceous earth. Decrease the amount of artificial light in coastal areas identical macronucleus. C. yellow fever -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. B. pathogen A. merozoites B. sporozoites C. saprophytes B. human health problems. calcium carbonate crystals From a 100 mL sample, you use a 0.5 mL subsample to inoculate a plastic dish filled with a semisolid nutrient medium that fosters growth of coliform bacteria. In a zygotic life cycle: A. Haploid cells form gametes that B. horizontal gene transfer carnivores D. Euglena (a unicellular alga) B. to insure survival in the uterus. Algae appear in colors of gold, brown, red, or green. opalines and proteromonads live in the intestines of cold-blooded vertebrates and have been called parasites;[26] A. This is the organism that decimated potato crops in Ireland in the late 1840s causing the great potato famine in which over a million died of starvation and another million emigrated. D. They are less resistant to antibiotics than Gram-negative bacteria. B. Plasmodium falciparum (the pathogen that causes malaria) Carbon dioxide (CO) E. It will become a spirochaete. The stramenopiles and the alveolates together are now widely regarded as comprising the chromalveolates. A. C. algae A. Resists penicillin and requires other antibiotics, change of position in the environment, structures that allow cells to move to favorable conditions, threadlike structures on surface of cell, twitch or glide across surfaces. -plastids acquired through tertiary endosymbiosis Which of the following is NOT a function of mucilage in bacteria? Home | About | Contact | Copyright | Privacy | Cookie Policy | Terms & Conditions | Sitemap.

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