Terms : Hide Images
| 2680533854 | biology | The scientific study of life. | 0 | |
| 2680535866 | biosphere | The entire portion of Earth inhabited by life; the sum of all the planet's ecosystems. | 1 | |
| 2681816724 | ecosystem | All the organisms in a given area, along with the nonliving (abiotic) factors with which they interact; a biological community and its physical environment. | 2 | |
| 2681816725 | community | An assemblage of all the populations of organisms living close enough together for potential interactions. | 3 | |
| 2681816726 | population | A group of individuals belonging to one species and living in the same geographic area. | 4 | |
| 2681817330 | organism | An individual living thing, such as a bacterium, archaeon, fungus, protist, plant, or animal. | 5 | |
| 2681817331 | organ system | A group of organs that work together in performing vital body functions. | 6 | |
| 2681817332 | organ | A specialized structure composed of several different types of tissues that together perform specific functions. | 7 | |
| 2681817936 | cell | A basic unit of living matter separated from its environment by a plasma membrane; the fundamental unit of life. | 8 | |
| 2681817937 | organelle | A membrane-enclosed structure with a specialized function within a cell. | 9 | |
| 2681817982 | molecule | Two or more atoms held together by covalent bonds. | 10 | |
| 2681829206 | emergent properties | New properties that arise with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases. | 11 | |
| 2681900415 | prokaryotic cell | A type of cell lacking a membrane-enclosed nucleus and other membrane-enclosed organelles; found only in the domains Bacteria and Archaea. | 12 | |
| 2681905299 | eukaryotic cell | A type of cell that has a membrane-enclosed nucleus and membrane-enclosed organelles. All organisms except bacteria and archaea are composed of these types of cells. | 13 | |
| 2682018063 | systems biology | An approach to studying biology that aims to model the dynamic behavior of whole biological systems based on a study of the interactions among the system's parts. | 14 | |
| 2683897976 | gene | A discrete unit of heredity information consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses). For eukaryotes, most are located in chromosomal DNA, and a few are carried by the DNA of mitochondria and chloroplasts. | 15 | |
| 2683936208 | genome | The complete set of genetic material of an organism or virus. | 16 | |
| 2683955276 | domain | A taxonomic category above the kingdom level and include Archaea, Bacteria, and Eukarya. | 17 | |
| 2683955277 | Bacteria | One of two prokaryotic domains of life, the other being Archaea. | 18 | |
| 2683955278 | Archaea | One of two prokaryotic domains of life, the other being Bacteria. | 19 | |
| 2683956151 | Eukarya | Domain of life that includes all eukaryotic organisms. | 20 | |
| 2684100581 | evolution | Descent with modification; the idea that living species are descendants of ancestral species that were different from present-day ones; also, the genetic changes in a population from generation to generation. | 21 | |
| 2684111700 | natural selection | A process in which individuals with certain inherited traits are more likely to survive and reproduce than are individuals that do not have those traits. | 22 | |
| 2685306888 | hypothesis | A testable explanation for a set of observations based on the available data and guided by inductive reasoning. | 23 | |
| 2685337181 | theory | A widely accepted explanatory idea that is broader in scope than a hypothesis, generates new hypotheses, and is supported by a large body of evidence. | 24 | |
| 2685380668 | controlled experiment | An experiment in which an experimental group is compared with a control group that varies only in the factor being tested. | 25 | |
| 2685441900 | artificial selection | The selective breeding of domesticated plants and animals to promote the occurrence of desirable traits. | 26 | |
| 2685464907 | technology | The application of scientific knowledge for a specific purpose, often involving industry or commerce but also including uses in basic research. | 27 |
