CC.1.8.- How brain parasites change their host's behavior

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https://youtu.be/g09BQes-B7E
PEDRO ÁLVAREZ JIMÉNEZ
Quiz by PEDRO ÁLVAREZ JIMÉNEZ, updated more than 1 year ago
PEDRO ÁLVAREZ JIMÉNEZ
Created by PEDRO ÁLVAREZ JIMÉNEZ about 7 years ago
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Resource summary

Question 1

Question
What do all parasites have in common?
Answer
  • All parasites live in or on host organisms
  • All parasites kill their hosts
  • All parasites need mosquitoes to move from one host to the next

Question 2

Question
What do Gordian worms do to their cricket hosts?
Answer
  • They make crickets move erratically
  • They make crickets move close to water
  • All of the above

Question 3

Question
Suppose 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?
Answer
  • Uninfected and infected rats both prefer hiding places with cat urine
  • Uninfected and infected rats both prefer hiding places with rabbit urine
  • Uninfected rats prefer hiding places with rabbit urine, while infected rats prefer hiding places with cat urine

Question 4

Question
Dogs infected with rabies virus are aggressive and produce lots of saliva. These symptoms help the virus move on to the next host.
Answer
  • False; these symptoms help the host get rid of the virus
  • True; the saliva will contaminate the environment, from which other hosts become infected
  • True; these symptoms make the host likely to bite another host and thereby transmit the virus

Question 5

Question
How many organisms on Earth are considered parasites?
Answer
  • One-third
  • More than one-half
  • Nearly all of them
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