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Plasmodium sp. does not have any locomotory organs. So, how does it move? What biochemical process allows it to move?

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Short answer: Only some stages of plasmodium are motile. These use "gliding motility".

Gliding motility relies on actin filaments, which enable the organism to deform it's shape, facilitating movement.

This video provides a good visual representation of the filament-based motility.

"Gametocytes develop into gametes in the insect midgut, and then fertilize each other to form motile zygotes, which escape the gut."

An ookinete (motile), a sporozoite (motile) and a merozoite (non-motile) of Plasmodium falciparum.

The ookinete and sporozoite are motile. The merozoite is non-motile.

Then of course there is the circulatory system of the host.

Source:

https://en.wikipedia.org/wiki/Plasmodium http://www.sciencedirect.com/science/article/pii/S0092867400812817

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  • $\begingroup$ You did not answer the OP's question. $\endgroup$
    – AMR
    Commented Jan 23, 2016 at 20:21
  • $\begingroup$ What makes the sporozoite and ookinete motile? Are there any filaments responsible for cell movement? $\endgroup$
    – Joseph
    Commented Jan 24, 2016 at 6:14

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