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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 of these 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 of these structures allow protists to be able to increase their surface are for gas exchange?
  1. the mitochondria
  2. the cell membrane
  3. the cell wall
  4. the nucleus
By what is the size that unicellular protists can achieve limited?
  1. their energy producing potential
  2. the number of mitochondria present in the cell
  3. their surface-to-area volume ratio
  4. the volume of nucleoplasm within the nucleus
Which group of protists secretes an external shell that is made from silicon dioxide?
  1. the diatoms
  2. the euglenids
  3. the paramecia
  4. the amoebozoans
Dinoflagellates are known to be endosymbionts of which of these organisms?
  1. fungi
  2. mammals
  3. corals
  4. roundworms
Which of these groups of protists are known to be photosynthetic, multicellular, and can grow many meters in length?
  1. Stramenophiles 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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