Biology Topic Practice

Malaria: Protists and Vectors

Malaria is a life-threatening disease caused by protist pathogens that are spread by mosquitoes.

What do we call an organism that spreads a disease but doesn't cause it?

What is Malaria: Protists and Vectors?

"Malaria is an intermittent and remittent fever caused by a protozoan parasite that invades the red blood cells."

Question 1

Malaria is caused by a:

Question 2

Vaccines contain dead or inactive forms of a pathogen. Why does this prevent future infection?

Question 3

Choose the correct explanation: how does a vaccine usually protect a person from future disease?

Question 4

Which group contains only types of pathogen?

The Malarial Cycle

The malarial protist has a complex life cycle that includes the mosquito.

Causes recurrent episodes of fever and can be fatal.

Spread is controlled by Preventing vectors from breeding and using nets.

Exam Tip

Mosquitoes are the "vector" because they carry the protist between hosts.

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