Qualification > Sciences
Human BiOlogy.
Deadly_king:
--- Quote from: iluvme on October 22, 2010, 04:36:42 pm ---Thanks muallima, master key and deadly king :)
How about the house fly?
Explain why one contact with an infected mosquito can lead to malaria but repeated larval contacts are needed to produce symptoms of schistosomiasis.
--- End quote ---
Am not 100% confident about this..............but my answer is quite reasonable :-[
Both the house fly and the mosquito operate by sucking blood from a person. In doing so, their saliva get into direct contact with the person's blood ,hence infecting him.
Larva however have not yet developed structures with which they'll be sucking blood. Hence it will take some time for them to grow into adults. Only then will they be harmful to us.
Hope it helps ;)
iluvme:
My book dsn't explain clearly too. :(
By the way, those were 2 dffrnt questions.
Deadly_king:
--- Quote from: iluvme on October 22, 2010, 06:30:33 pm ---My book dsn't explain clearly too. :(
By the way, those were 2 dffrnt questions.
--- End quote ---
I'll try to get more info and will let you know :)
Yeah..........I know they are two different questions ;)
But house flies and mosquitoes operate the same way :D
iluvme:
OKiez thank You. :)
elemis:
Since when do common house flys suck blood from a person ? They dont have the hypodermic needle like thing that mosquitoes have....
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