Each of the following statements concerning Ascaris lumbricoides is correct* Ascaris lumbricoides can cause pneumonia Ascaris lumbricoides is one of the largest nematode A. lumbricoides is transmitted by ingestion of eggs Both dogs and cats are intermediate hosts of Ascaris lumbricoides
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- Which of the following is mismatched?a) Plasmodium —malariab) Trypanosomes—dysenteryc) Dinoflagellates—paralytic shellfish poisoningd) Nematode—trichinellosisThe following statements about Streptobacillus moniliformis are all true excepta) it can be transmitted by food contaminated with rodent feces.b) pet store workers are at increased risk of infection.c) it can be transmitted by the bites of animals other than rats.d) human infection is characterized by irregular fevers, rash, and joint pain.e) it is a Gram-positive spore-forming rod.Which of the following statements is true? Multiple Choice Malaria produces minimal changes in tissue function. The Plasmodium falciparum species of Plasmodia does not infect humans. Protozoal infections readily respond to drug therapy. Americans are not exposed to protozoal infections.
- Malaria is caused by four species of Plasmodium. There are two distinct stages of a malarial infection, an asexual cycle and a sexual cycle. Summarize the key stages in the development and transmission of a malarial infection.Which parasitic nematode can cause elephantiasis in humans? A. <i>Necator americanus</i> B. <i>Trichinella spiralis</i> C. <i>Enterobius vermicularis</i> D. <i>Wuchereria bancrofti</i> E. <i>Ascaris lumbricoides</i>One of the most characteristic symptoms of malaria is the alternation of attacks (involving a cold phase, a hot phase, and a sweating phase) with periods of 1 or 2 days of no or few fevers. Given the life cycle of Plasmodium what is the best explanation for this pattern: When free in the blood, merozoites release chemicals that directly cause body responses. Merozoites appear in coordinated “waves”, which explains the cycling attacks Merozoites entering the red blood cells generate a strong response from the red blood cells, which stimulates a massive immune response Attack phase correlates with simultaneous bursting of infected red blood cells, releasing thousands or millions of merozoites. This triggers massive immune response, resulting in symptoms Plasmodium generates a constant accumulation of irritants in the blood, mostly residues from digesting hemoglobin . Once the amount reaches a critical level, these trigger a massive immune response
- The malarial form infectious for mosquitoes is called aa) gametocyte. b) trophozoite. c) sporozoite.d) schizont. e) merozoite.Which of the following is known as a “hookworm?” a. Trichnella spiralis b. Entamoeba histolytica c. Necator americanus d. Enterobius vermicularis e. Schistosoma spp.An individual who swam in freshwater during the summer after a time experiences intense head pain, nausea and fever. This could indicate (can be multiple) Primary Amebic Menigoencephalitis (PAM) Dinoflagellates were present a Naegleria fowleri infection a harmful algal bloom (HAB)
- Characteristics of Dientamoeba fragilis include all of the following except: a. This organism is a flagellate with internal flagella b. Transmission is thought to occur through the ingestion of specific helminth eggs c. This organism is pathogenic and tends to be more commonly found in children d. Trophozoites contain a single nucleus, while the cysts contain two nucleiA 5 year-old child was playing in their backyard. Suddenly, the child felt itchiness in his skin and began to scratch his body. Based on laboratory results, it was confirmed that the child was infected with hookworm. Answer the following questions: What possible mode of transmission the parasite has been acquired? Explain why. List all possible effects of parasite on the host. Explain each.No explanation needed, letter of the answer only. 34. All are aphasmids except: a. Trichuris b. Trichinella c. Trypanosoma d. Capillaria e. NOTA 35. Which of the malaria paeasire/s have continuous reproduction in the liver? a. P. falciparum b. P. vivax c. P. ovale d. P. malariae e. b and c 36. Which is not a mode of transmission for Toxoplasma a. ingestion of oocyst in raw pork b. inhalation of oocyst from cat feces c. vertical transmission d. bite or scratch of a cat e. c and d