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4 Written questions

4 Multiple choice questions

  1. What is the number of years it takes for 50% of a radioactive isotope to decay?
  2. According to what, a severe ice age accounted for the limited diversiy and distribution of multicellular eukaryotes?
  3. What was the ancient supercontinents brought on by continental drift?
  4. The first multicellular organisms were what of autonomously replicating cells in which some cells became specialized?

4 True/False questions

  1. stromatolitesWhat are the oldest known fossils, rocklike layers of bacteria and sediment?

          

  2. serial endosymbiosisWhat are aggregates of abiotically produced organic molecules surounded by a membrane?

          

  3. genetic annealingWhich patterns can be used to date rocks, shwoing when the orientation of Earth's magnetic field reversed?

          

  4. protobiontsWhat are aggregates of abiotically produced organic molecules surounded by a membrane?