4 Written questions
4 Multiple choice questions
- According to what, a severe ice age accounted for the limited diversiy and distribution of multicellular eukaryotes?
- In what process were prokaryotes swallowed by eukaryotes and became part of the eukaryote system (includes plastids and mitochondria)?
- What is the number of years it takes for 50% of a radioactive isotope to decay?
- What are aggregates of abiotically produced organic molecules surounded by a membrane?
4 True/False questions
radiometric dating → What involves the horizontal gene transfers between many bacterial and achael lineages?
colonies → What are RNA catalysts that may have been used by RNA molecules to catalyze replication?
pangea → What was the ancient supercontinents brought on by continental drift?
stromatolites → What are the oldest known fossils, rocklike layers of bacteria and sediment?