plasmodium & human symbiosis
Post on 23-Feb-2016
39 Views
Preview:
DESCRIPTION
TRANSCRIPT
Plasmodium & Human Symbiosis
By: Rachel Schwab
Evasive ParasitePlasmodium hide in the human liver and in blood cells
They hide from the immune system
A new Face
• Plasmodium changes the “face” (surface proteins that they show to the immune system.
• This allows it to be very good at resisting drugs.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Life of Plasmodium 1• Female Anopheles mosquito bites infected person with malaria. (picks up plasmodium)• Gametes form zygote in
mosquito's digestive tract.• Only diploid stage of life cycle
Life of Plasmodium 2• Infected mosquito bites a person
giving them plasmodium sporozoits.
• Sporozoites enter liver cells and divide to become merozoits, which can then enter red blood cells. QuickTime™ and a
TIFF (Uncompressed) decompressorare needed to see this picture.
Life of Plasmodium 3• Merozoites grow and divide
asexually.• Break out of red blood cells causing
fevers and chills. May enter new red blood cells.
• Some merozoites form gametocytes which starts the cycle over again.
Review Questions• What parasite causes Malaria?• Where does plasmodium spend most of their
life?• What allows plasmodium to be “an evasive
parasite”?• Symptoms of Malaria?• How is the cycle started over?• Where is the zygote formed in the cycle?
top related