Research Topic: Parasitic Protists - protozoan diseases 1) Research: Name three

Question

Research Topic: Parasitic Protists - protozoan diseases
1) Research: Name three common diseases caused by protoazoans.
2) Choose one parasitic protist to go into more depth with.
3) For the parasitic protist you have chosen –
    a) What is the type of protist (superclade/clade) ?
    b) What is the life cycle of the protist – include how it is transmitted to humans.
    c) What are the symptoms of the disease?
    d) What is the most effective way to prevent the transmission to humans?
    e) If a human is infected, what are some common treatments?
    f) Why are protozoan infections more difficult to treat than bacterial infections?
4) Answer these questions – include evidence to support your opinion:
    a) What role, if any do you think that the United States should play in the prevention and treatment of these types of diseases?
    b) What is the most effective way to treat these diseases? (Prevention/Drugs/Education)
    c) Why do developing countries (formerly known as third world) have a higher incidence of parasitic protist infections than developed countries?

Can you guys Please answer all the question?

Explanation / Answer

1. amoebic dysentery- E. histolytica

malaria- Plasmodium vivax

Giardiasis- Giardia lambia

2.Entamoeba histolytica

3.a . clade protist

b.

Infection by Entamoeba histolytica occurs by ingestion of mature quadrinucleate cysts in fecally contaminated food, water, or hands.The quadrinucleate cyst is resistant to the gastric environment and passes unaltered through the stomach

When they cyst of E.histolytica reaches caecum or lower part of ileum excystation occurs and an amoeba with four nuclei emerges and that divides by binary fission to form eight trophozoites.
Trophozoites migrate to the large intestine and lodge in to the submucosal tissue.
Trophozoites grow and multiply by binary fission in large intestine (Trophozoite phase of life cycle is responsible for producing characteristics lesion of amoebiasis).
Certain number of trophozoites are discharged in to the lumen of the bowel and are transformed into cystic forms.
The cysts thus formed are unable to develop in the same host and therefore necessitate a transference to another susceptible host.The cysts are passed in the feces.

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