Quiz
CC.1.8.- How brain parasites change their host's behavior
Perguntas do quiz (5)
1What do all parasites have in common?
- AAll parasites live in or on host organisms
- BAll parasites kill their hosts
- CAll parasites need mosquitoes to move from one host to the next
2What do Gordian worms do to their cricket hosts?
- AThey make crickets move erratically
- BThey make crickets move close to water
- CAll of the above
3Suppose you did an experiment in which you gave uninfected rats and rats infected with Toxoplasma a choice between hiding places sprinkled with the urine of cats and rabbits. Which of the following results would you expect to observe?
- AUninfected and infected rats both prefer hiding places with cat urine
- BUninfected and infected rats both prefer hiding places with rabbit urine
- CUninfected rats prefer hiding places with rabbit urine, while infected rats prefer hiding places with cat urine
4Dogs infected with rabies virus are aggressive and produce lots of saliva. These symptoms help the virus move on to the next host.
- AFalse; these symptoms help the host get rid of the virus
- BTrue; the saliva will contaminate the environment, from which other hosts become infected
- CTrue; these symptoms make the host likely to bite another host and thereby transmit the virus
5How many organisms on Earth are considered parasites?
- AOne-third
- BMore than one-half
- CNearly all of them
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