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Definition
| Period of evolutionary change in which groups of organisms form many new species whose adaptations allow them to fill vacant ecological roles in their communities. |
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| adenosine triphosphate (ATP) |
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Definition
| An adenine-containing nucleoside triphosphate that releases free energy when its phosphate bonds are hydrolyzed. This energy is used to drive endergonic reactions in cells. |
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| One of two prokaryotic domains, the other being Bacteria. |
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| Member of the prokaryotic domain Archaea. |
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| The use of computers, software, and mathematical models to process and integrate biological information from large data sets. |
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Definition
| The scientific study of life. |
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| An experiment in which an experimental group is compared with a control group that varies only in the factor being tested. |
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| A type of logic in which specific results are predicted from a general premise. |
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Term
| deoxyribonucleic acid (DNA) |
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Definition
| A double-stranded, helical nucleic acid molecule consisting of nucleotide monomers with a deoxyribose sugar and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and thymine (T); capable of replicating and determining the inherited structure of a cells proteins. |
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| The process of scientific inquiry that focuses on describing nature. |
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| New properties that arise with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases. |
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| The domain that includes all eukaryotic organisms. |
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| A type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles. |
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| Descent with modification; the idea that living species are descendants of ancestral species that were different from the present-day ones; also defined more narrowly as the change in the genetic composition of a population from generation to generation. |
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| The genetic material of an organism or virus; the complete complement of an organisms or viruss genes along with its noncoding nucleic acid sequences. |
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| A tentative answer to a well-framed question, narrower in scope than a theory and subject to testing. |
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Definition
| A type of logic in which generalizations are based on a large number of specific observations. |
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| The search for information and explanation, often focused by specific questions. |
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| A representation of a theory or process. |
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| A primary mechanism of homeostasis, whereby a change in a physiological variable triggers a response that counteracts the initial change. |
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Definition
| A physiological control mechanism in which a change in a variable triggers mechanisms that amplify the change. |
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| A type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles. |
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| The empirical study of the natural world. |
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| An approach to studying biology that aims to model the dynamic behavior of whole biological systems. |
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| The application of scientific knowledge for a specific purpose, often involving industry or commerce but also including uses in basic research. |
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