Biology Questions and Answers
merozoites infect red blood cells where
the second asexual recycle (erythrocytic schizoproduction ogony) and thef the (^)
production of many other parasites
occur; differentiate into gametocytes.some of these parasites (^) The red
blood cells then break (hemolysis), the
parasitesthe cycle can r are released in the blood andestart.
- To which phase of the
plasmodium life cycle do the
typical chills and fever of
malaria correspond?
The typicalmalaria corr chills anespond to the phase whend fever episodes of
red blood cells are destroyed after the
erythrocyticplasmodium lif schizoe cycle.gony of the
- What are the main
prophylactic measures against
malaria?
The main pmalaria are the elimination reventive measures aof the vectorgainst (^)
mosquito, treatmeavoidance of the mosquito bnt of infected people,ite,
information for travelers to endemic
areas and the use of preventivemedicines.
- What are other important
human diseases caused by
protozoans?
Some other important pinfections are amebiasis, giardiasis,rotozoan (^)
trichomoniasis, leishmaniasis,
toxoplasmosisby free-living amoebas. and meningoencephalitis
- What is the etiological
agent of amebiasis? How is it
transmitted and what are the
typical manifestations of the
disease?
Amebiasis is caused by the protozoan
Entamoeamoeba.ba histolytica, or simply
The transmissionfecal, through contaminate of the disease is oral-d water and
food or by insects like cockroaches and
flies. The amoeba parasitesof humans generally in an the intestine
asymptomaticsometimes cause e manner, but it cannteritis with diarr (^) hea
and severe dysentery, abdominal pain,
weight loss and anemia. Iextra-intestinal invasion may occurn rare cases
affecting the liver, skin, genital organs
and other organs.
- What is the parasite that
causes giardiasis? How is it
transmitted and what are the
typical manifestations of the
disease?
Giardiasisby Giardia lamblia, o is a protozoal infection causer simply giardia, a d
flagellate protozoan.
The transmission is fecal-oral, through
contaminated water by insects like cockroaches aand food or carriend flies. d
Giardiasis manifests like amebiasis, as
http://www.biology-questions-and-answers.com