4 Written questions
4 Multiple choice questions
- What are RNA catalysts that may have been used by RNA molecules to catalyze replication?
- What involves the horizontal gene transfers between many bacterial and achael lineages?
- According to what, a severe ice age accounted for the limited diversiy and distribution of multicellular eukaryotes?
- The first multicellular organisms were what of autonomously replicating cells in which some cells became specialized?
4 True/False questions
radiometric dating → What is used to determine the ages of fossils?
stromatolites → The first multicellular organisms were what of autonomously replicating cells in which some cells became specialized?
three-domain system → What are the oldest known fossils, rocklike layers of bacteria and sediment?
half-life → What is the number of years it takes for 50% of a radioactive isotope to decay?