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