Describe the life cycle of Plasmodium vivax and explain how humans fit into its life cycle.
What will be an ideal response?
Answers may vary but should include:
1. The gametes will fuse in the digestive system of the female Anopheles mosquito. The zygote will produce sporozoites which will migrate to the salivary glands.
2. When the mosquito bites the human host, the sporozoites can be passed to the bloodstream of the host.
3. Once in the bloodstream, the sporozoites will migrate to the host's liver and develop into the merozoites.
4. The merozoites will migrate into the bloodstream and infect the red blood cells as trophoblasts.
5. The merozoites will reproduce asexually in the red blood cells of the host, eventually causing the red blood cells to rupture.
6. If bitten by another mosquito, the merozoites can be taken up into the new mosquito, starting the cycle all over again.
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