| Term | Definition |
| bacteria | which bacteria or archaea: have a compound called peptidoglycan in their cell walls? |
| Archaea | which bacteria or archaea: have a compound called phospholipids in their tails and plasma membranes? |
| pathogenic | bacteria that cause disease are termed |
| abundance, disease, oxygen, nitrogen | Why do we care about bacteria and archaea |
| extremophiles | "extreme-lovers" bacteria or archaea that live in high salt, high temp, low temp or high pressure habitats |
| no | was there free molecular oxygen present in the atmosphere in the first 2.3 by of earth's existence |
| cyanobacteria | how did the o2 get released into free molecular oxygen |
| CYANObacteria | what is the lineage of photosynthetic bacteria that were the first organisms to "oxygen producing" photosynthesis |
| anaerobic | doesn't use oxygen for respiration |
| aerobic | uses oxygen for respiration |
| bacteria | what are the only organisms that are capable of converting nitrogen to ammonia? |
| nitrogen fixation | a process that's complex and a redox reaction converting nitrogen to ammonia |
| Nitrogen | what element allows the many multicellular organisms to exist today |
| phototrophs | "light-feeders" use light energy to promote e-, ATP is produced by photophosphorylation |
| chemoorganotrophs | oxidize organic molecules with high potential energy (sugars), ATP made by cellular respiration or via fermentation pathways with sugars as e- donor |
| chemolithotrophs | "rock feeders" oxidize inorganic molecules with high potential energy (NH3, CH4) ATP is produced by cellular respiration with inorganic compounds as e- donor |
| autotrophs | "self feeders" synthesize CO2 or CH4, absorb organic compounds from environment |
| heterotrophs | organisms that acquire building block compounds produced by other organisms |
| oxygenic photosynthesis | generate oxygen as a by product after splitting water molecules to obtain electrons |
| anoxygenic photosynthesis | produce elemental S or Fe3+ |