Here this is the definite correct thing on everything about malaria:
The mosquito is the vector for the pathogen Plasmodium. Plasmodium multiplies in the stomach wall of the mosquito, then migrates to the salivary glands.
Plasmodium is the protoctist that causes malaria. It can reproduce sexually inside the mosquito, and the resulting variation makes the production of vaccines VERY difficult.
so:
1.An infected mosquito passes on parasites to an uninfected human. Plasmodium passes down the piercing mouthparts from the mosquito's salivary glands.
2. Parasites multiply RAPIDLY in the human liver, and are then released into the blood.
3. Parasites then invade RBCs, where
they feed on haemoglobin then multiply by multiple fission. then they burst, etc etc
So the people with Sickle cell must have the abnormal haemoglobin that the plasmodium can't eat or something
(I don't think you need THIS much detail in the exam
lol)