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BI 113 Chapter 1
Campbell Biology Vocab
| Question | Answer |
|---|---|
| Biosphere | the whole part of the earth that is inhabited by life; the sum of all the earth's ecosystems |
| Ecosystem | The whole set of organisms in a particular area along with the nonliving factors with which those organisms interact; one or more than one community and the surrounding physical environment |
| Community | the whole set of organisms in a particular area; a group of populations of different species that live closely enough that they can potentially interact with one another |
| Population | A set of individual organisms of the same species that reside in one area and interbreed, yielding fertile offspring |
| Organism | a living thing |
| Organ system | A set of organs that are physically or functionally related, e. g. mouth, stomach, and large intestine forming part of the digestive system |
| Tissues | made up of a group of cells that work together and perform a specialized function |
| Cells | life's fundamental unit of structure and function |
| Organelles | the various functional components present in cells |
| Molecules | a chemical structure consisting of two or more atoms |
| Reductionism | The reduction of complex systems to simpler components that are more manageable to study |
| Systems biology | An approach to studying biology that aims to model the dynamic behavior of whole biological systems |
| evolution | the idea that living species are descendants of ancestral species that were different from the present-day ones |
| evolution; define more narrowly | the change in the genetic composition of a population from generation to generation (descent with modification) |
| biology | the scientific study of life |
| 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 |
| global climate change | increase in temperature and change in weather patterns all around the planet, due mostly to increasing atmospheric carbon dioxide levels from the burning of fossil fuels (*global warming) |
| eukaryotic cell | a type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles |
| prokaryotic cell | a type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles |
| DNA | a double-stranded, helical nucleic acid molecule, consisting of nucleotide monomers with a deoxyribose sugar and the nitrogenous bases adenine, cytosine, guanine, and thymine |
| Of what is DNA capable? | of being replicated and determining the inherited structure of a cell's proteins |
| genes | a discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA |
| gene expression | the process by which information encoded in DNA directs the synthesis of proteins or, in some cases, RNAs that are not translated into proteins and instead function as RNAs |
| genome | The genetic material of an organism or virus; the complete complement of an organism's or virus's genes along with its noncoding nucleic acid sequences. |
| bioinformatics | the use of computers, software, and mathematical models to process and integrate biological information from large data sets |
| genomics | the study of whole sets of genes and their interactions within a species, as well as genome comparisons between species |
| negative feedback | a form of regulation in which accumulation of an end product of a process slows the process |
| positive feedback | a form of regulation in which an end product of a process speeds up that process |
| bacteria | unicellular, have a plasma membrane, but do not have a nucleus or internal organelles; nearly ubiquitous |
| archaea | unicellular; domain includes many species that thrive in extreme environments of high saltiness, high temperature, or low pH |
| eukarya | cells have membrane-bounded nucleus and organelles |
| natural selection | A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits. |
| science | An approach to understanding the natural world. |
| inquiry | The search for information and explanation, often focusing on specific questions. |
| data | Recorded observations |
| inductive reasoning | A type of logic in which generalizations are based on a large number of specific observations. |
| hypothesis | A testable explanation for a set of observations based on the available data and guided by inductive reasoning; narrower in scope than a theory. |
| deductive reasoning | A type of logic in which specific results are predicted from a general premise. |
| controlled experiment | An experiment in which an experimental group is compared with a control group that varies only in the factor being tested. |
| theory | An explanation that is broader in scope than a hypothesis, generates new hypotheses, and is supported by a large body of evidence. |
| model organism | A particular species chosen for research into broad biological principles because it is representative of a larger group and usually easy to grow in a lab. |
| technology | The application of scientific knowledge for a specific purpose, often involving industry or commerce but also including uses in basic research. |
| gene expression includes... | the production of proteins and functional DNA molecules |