| A | B |
|---|
| producers | organisms that produce their own food |
| consumers | organisms that eat producers or other consumers |
| decomposers | organisms that break down the dead remains of other organisms |
| autotrophs | organisms that are able to make their own food |
| heterotrophs | organsims that depend on other organisms for food |
| asexual reproduction | reproduction accomplished with one organism |
| sexual reproduction | reproduction that requires two organisms, male & female |
| abiogenesis | the theory that life can come from non-life |
| prokaryotic cell | a cell that has no distinct membrane-bound organelles |
| eukaryotic cell | a cell with distinct, membrane-bound organelles |
| binomial nomenclature | naming an organism with its genus & species name |
| taxonomy | the science of classifying organisms |
| pathogen | an organism that causes disease |
| saprophyte | an organism that feeds on dead matter |
| parasite | an organism that feeds on a living host |
| respriation | the process by which food is converted into useable enegry for life functions |
| aerobic respiration | respiration that requires oxygen |
| anaerobic respriation | respriation that does not require oxgyen |
| psuedopod | a foot-like extension of a cell, used for movement & engulfing food |
| flagellate | a protozoan that propels itself with a flagellum |
| symbiosis | two or more organisms of different species living together so that each benefits from the other |
| plankton | tiny organisms that float in the water |
| zooplankton | tiny floating photosynthetic organisms that are either small animals or protozoa |
| phytoplankton | tiny floating photosynthetic organisms, primarily algae |
| cellulose | a substance made of sugars common in the cell walls of many organisms |
| Monera | kingdom composed of single celled organisms which are prokaryotic cells |
| Protista | the kingdom which contains single celled organisms which are eukaryotic cells |
| life requirements | must contain DNA, be able to extract & use energy from its surroundings, sense & respond to changes in its surroundings, reproducechanges |
