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A: Yeast is a eukaryotic organism.
Q: 2. 3. What does the term symbiosis mean?
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Q: What is Endosymbiosis?
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Q: What is the origin of parasites?
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What does the term “dimorphic” refer to? Give an example of an organism that is dimorphic and what
disease it causes.
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- What factors can aggravate this order?Is it more beneficial for Neodermata to have one host or two hosts? Neodermatahas two classes: class Trematoda and class Monogenea. Class Trematoda has the subclass Digenea, which has organisms that live through at least two different hosts. An example of this is Fasciola hepatica, the sheep's liver fluke. Class Monogenea has organisms that only need to live through one host. Is it better to have a simple or complex life cycle? Which lives longer? Has more energy? Does more damage or good?In the pictures below, identify the arrowed reproductive structures of microscopic cyanobacteria based on the following descriptions: Akinetes are dormant structures larger than the vegetative cells, are rich in food reserves, and have thick walls. Most filamentous cyanobacteria develop akinetes in adverse conditions (e.g., winter, dry periods). When favorable conditions return, they germinate and produce new filaments. Hormogonia are short pieces of filaments consisting of 5–15 trichomes that fragment and develop into new filaments. Heterocytes (or heterocysts) are multicellular structures that have a thick and massive sheath, formed by members of the Nostocales. It is the location of the enzyme nitrogenase for nitrogen fixation, the conversion of nitrogen gas into ammonium and then amino acids. They may be intercalary or terminal in position and may germinate from either end or both the ends to give rise to new filaments. Non-filamentous cyanobacteria generally produce spores…
- write an article on Cryptosporidium a pathogenic eukaryote parasite. What is the natural habitat for this organism? (water, soil, humans, plants, etc.) What clinical significance does this organism have for humans? (What disease/infections does it cause in humans?) What is the mode of transmission to humans? (How do you get an infection with this organism?) What is the worldwide geographic distribution for this organism? (Where is it found, where have there been reported cases or outbreaks lately?)Describe the life cycle of Toxoplasma gondii, where does Toxoplasma "want" to be? How does toxo gets into rats and deal with the problems of being stuck in the wrong host animal?(a) What species of blood fluke causes Schistosomiasis in the Philippines? (b) What species of freshwater snail is its intermediate host?
- Fill in the table below with reproductive method/s employed for each given algal species. Vegetative: binary fission, fragmentation, etc. Asexual: specify type of spore Sexual: isogamy, anisogamy, oogamy Life cycle: diplontic, haplontic, diplohaplontic, triphasic Algal species Vegetative Asexual Sexual Life cycle Ulva Caulerpa SaccharinaInfected surgical lesions are often examples of nosocomial infections. What is a nosocomial infection? Why are nosocomial infections so dangerous?What are two major diseases caused by protists (use common names)? -(HINT: this disease was on The Oregon Trail video game) - -(HINT: disease carried around by mosquitos) -