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| One of two prokaryotic domains, the other being Bacteria. |
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| One of two prokaryotic domains, the other being Archaea. |
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| the study of life that sees to provide an understanding of the natural world. |
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(1) A taxonomic category above the kingdom level. The three domains are Archaea, Bacteria, and Eukarya. (2) An independently folding part of a protein. |
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New properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases. |
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| All the changes that have transformed life on Earth from its earliest beginnings to the diversity that characterizes it today. |
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| Reducing complex systems to simpler components that are more manageable to study |
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| Any of the world’s major ecosystems, classified according to the predominant vegetation and characterized by adaptations of organisms to that particular environment. |
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| A set of characteristics used to assess the similarities and differences between various species, leading to a classification scheme; the branch of biology concerned with naming and classifying the diverse forms of life. |
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| in an experiment, the group of test subjects left untreated or unexposed to some procedure and then compared with treated subjects in order to validate the results of the test |
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| the system of advancing knowledge by formulating a question, collecting data about it through observation and experiment, and testing a hypothetical answer |
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| is an explanation for a question or a problem that can be formally tested. |
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| A localized group of individuals that belong to the same biological species (that are capable of interbreeding and producing fertile offspring). |
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| All the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction |
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| Includes all living organisms and non living matter such as air, water and minerals |
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| The flow of energy through an animal, taking into account the energy stored in the food it consumes, the energy used for basic functions |
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| An experiment in which an experimental group is compared to a control group that varies only in the factor being tested |
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| the entire portion of Earth inhabited by life; the sum of all the planet’s ecosystems |
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| A representation of a theory or process |
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| A type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles, present in protists, plants, fungi, and animals; also called eukaryote |
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| A type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles; found only in the domains Bacteria |
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| A type of logic in which specific results are predicted from a general premise |
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| A type of logic in which generalizations are based on a large number of specific observations |
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| ( deoxyribonucleic acid) A double-stranded, helical nucleic acid molecule capable of replicating and determining the inherited structure of a cell’s proteins |
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| A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses). |
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| The smallest unit of matter that retains the properties of an element |
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| Two or more atoms held together by covalent bonds |
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| An individual living thing |
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| A group of organs that work together in performing vital body functions |
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| A specialized center of body function composed of several different types of tissues |
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| an integrated group of cells with a common function, structure, or both. |
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| Life’s fundamental unit of structure and function. |
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| One of several formed bodies with specialized functions |
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