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| of, relating to, or consisting of living cells |
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| the basic unit of a chemical element. |
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| any of the distinct types of material of which animals orplants are made, consisting of specialized cells and their products |
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| all the inhabitants of a particular town, area, or country |
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| a biological community of interacting organisms and theirphysical environment. |
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| characterized by the inference of general laws fromparticular instances: instinct rather than inductive reasoningmarked her approach to life. |
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| a supposition or a system of ideas intended to explainsomething, esp. one based on general principles independentof the thing to be explained |
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| the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth |
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| Structures performing a similar function but having a different evolutionary origin, such as the wings of insects and birds. Often contrasted with homologous. |
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| deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent ofchromosomes. It is the carrier of genetic information. |
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| the tendency toward a relatively stable equilibrium between interdependent elements, esp. as maintained by physiological processes. |
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| a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. |
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| a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans. |
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| a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. The species is the principal naturaltaxonomic unit, ranking below a genus and denoted by aLatin binomial, e.g., Homo sapiens. |
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| the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms. |
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| a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation |
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| able to be changed or adapted |
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| the process whereby organisms better adapted to their environment tend to survive and produce more offspring. |
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| the branch of biology that deals with phylogenesis |
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| arising as an effect of complex causes and not analyzable simply as the sum of their effects |
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| a change by which an organism or species becomes better suited to its environment |
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| any of a number of organized or specialized structures within a living cell. |
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| A group of related organs is an organ system . Organs within asystem may be related in any number of ways, but relationshipsof function are most commonly used. |
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| a group of interdependent organisms of different species growing or living together in a specified habitat |
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| reasoning is a logical process in which a conclusiondrawn from a set of premises contains no more information thanthe premises taken collectively. All dogs are animals; this is adog; therefore, this is an animal |
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| a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact |
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| he power to influence or direct people's behavior or thecourse of events |
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| (of organs) similar in position, structure, andevolutionary origin but not necessarily in function |
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| a theory in biology that includes one or both of the statementsthat the cell is the fundamental structural and functional unit ofliving matter and that the organism is composed of autonomouscells with its properties being the sum of those of its cells |
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