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Evolution of Early Eukaryotes (Grades 11-12)

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Evolution of Early Eukaryotes

Binary fission is a form of asexual reproduction that occurs in protists.
  1. True
  2. False
Which characteristic describes the organisms known as protists?
  1. They are all microscopic.
  2. They are all unicellular.
  3. They are closely related to bacteria.
  4. They are not closely related to each other.
Which structure allows protists to be able to increase their surface area for gas exchange?
  1. mitochondria
  2. cell membrane
  3. cell wall
  4. nucleus
The size that unicellular protists can achieve is limited by
  1. their energy-producing potential.
  2. the number of mitochondria present in the cell.
  3. their surface-area-to-volume ratio.
  4. the volume of nucleoplasm within the nucleus.
Which group of protists secretes an external shell of silicon dioxide?
  1. diatoms
  2. euglenids
  3. paramecia
  4. amoebozoans
Dinoflagellates are known to be endosymbionts of
  1. fungi.
  2. mammals.
  3. corals.
  4. roundworms.
Which group of protists are photosynthetic, multicellular, and can grow many meters in length?
  1. stramenopiles and phaeophyta
  2. alveolates and dinoflagellates
  3. amoebozoans and slime molds
  4. foraminiferans and excavates
                         are protists that are able to photosynthesize and to actively hunt prey.
Paramecia have an elaborate sexual behavior known as                             , which results in the transfer of genetic material between individuals.
What happens during the process of conjugation in Paramecia and why is it an important event?

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