| A | B |
|---|
| taxa | collections of related organisms |
| taxonomy | the process of classifying organisms into related groups |
| phylogeny | evolutionary history of related organisms |
| morphology | general appearance of an organism |
| Eohippus | ancient horse ancestor |
| homologous | features inherited from the same ancestor |
| analogous | features that are similar in function, but from different evolutionary histories |
| Kingdom | largest classification group |
| species | smallest classification group |
| Carolus Linnaeus | devised first classification scheme |
| Big Bang Theory | Possible explanation for formation of universe |
| anaerobic | earth's early atmosphere |
| Extraterrestrial meteorites | one possible explanation for the appearance of organic compounds on the early earth |
| Stanley Miller | showed that simple organic compounds could have formed in the early earth atmosphere |
| amino acids & adenine | products of the Miller experiment |
| Sidney Fox | showed that polypeptides can be formed by heating dry amino acids |
| coacervates | complex unit of hydrophobic molecules |
| proteinoid microspheres | droplets that form spontaneously when hot polypeptide solutions are cooled |
| ribozymes | RNA molecules with catalytic function |
| clay | according to one theory, life developed on this mineral |
| 3.5 billion | estimated earliest life on earth |
| heterotrophs | first life on earth--simple bacteria |
| ATP | one of first available molecules for living things |
| fermentation | earliest form of metabolism |
| photosynthesis | one of the last forms of metabolism to evolve |
| ozone | O3 |
