Review what you have learned about the microbe that causes malaria. In the space below, describe the following: • Genus and species name • Staining procedure most often used to identify this organism • Shape and arrangement: ? If the organism is a bacterium: give the shape and arrangement ? If the organism is a eukaryote: give the shape • Special structures • Signs and symptoms: ? Three unique signs ? Three unique symptoms
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There are several species of Plasmodium that can cause malaria in humans, including Plasmodium falciparum, Plasmodium vivax, Plasmodium ovale, and Plasmodium malariae. Step 2: Staining procedure most often used to identify this organism The staining procedure Show more…
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Malaria is caused by four species of the genus [ Select ], which is transmitted by [ Select ] mosquitoes. The life cycle of this parasite has three stages: the [ Select ] cycle, where sporozoites injected by a female mosquito infect the host's liver, the [ Select ] cycle, where merozoites penetrate red blood cells and become ring-shaped trophozoites, lysing the erythrocytes, and the [ Select ] cycle where a female mosquito feeding on an infected human ingests gametocytes within erythrocytes, develop into gametes, with male gametes fertilizing female gametes to produce zygotes, which develop in sporozoites ready for transmission to new host. Virulence factors of Plasmodium include the following: protein assemblage called the [ Select ] which injects toxins and enzymes into host cells, [ Select ] which enable infected red blood cells to adhere to certain tissues and vascular endothelium, evading clearance by spleen. Tularemia is a a zoonotic disease transmissible to humans, cause by [ Select ]. This nonmotile, aerobic Gram-negative coccobacillus has a [ Select ] that discourages phagocytosis, and can inhibit the fusion of [ Select ] with phagocytic vesicles. It also produces [ Select ] which accounts for many of the signs and symptoms of tularemia.
Suman K.
Malaria is the third leading cause of death from infectious diseases in the world, after tuberculosis and AIDS. It is mostly prevalent in African or tropical Asian countries and is considered a "disease of the developing world" and is spread by mosquito bites only from infected blood. Many regions in Africa are reporting increasing populations of mosquito species that show resistance to insecticides. In your own words, discuss the lifecycle of Plasmodium stating the classification of the vector; the primary and intermediate hosts and all developmental stages and various structures that can be seen in the life cycle of this protozoan. Also, provide a detailed personal submission as to how you think this disease can be either diminished or completely eradicated.
Jenny W.
Apicomplexans: Plasmodium The Apicomplexa are all obligate parasites of animals. They are non-motile and possess a unique structure called an apical complex that is used to attach the organism to its host. This slide shows human cells infected with Plasmodium, the parasite that causes malaria. Figure 13.16 (From OpenStax Text): This light micrograph shows 100x magnification of red blood cells infected with P. falciparum (seen as purple). (credit: modification of work by Michael Zahniser; scale-bar data from Matt Russell) 1) What does the term ‘obligate’ parasite mean? (.5) 2) Malaria is one of the most devastating diseases in the world, killing over 2 million people each year. Give some of the reasons why malaria is such a difficult disease to treat or prevent (at least 3 reasons). (1.5)
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