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| Seven characteristics shared by living systems |
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Definition
1. cellular organization
2. ordered complexity
3. sensitivity
4. growth, development, reproduction
5. energy utilization
6. homeostasis
7. evolutionary adaptation |
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| all organisms maintain relatively constant internal conditions that are different from their environment |
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| the smallest unit of an element that contains all the characteristics of that element; building blocks of matter |
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| atoms joined together into clusters |
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Definition
| specialized part of a cell; literally, a small cytoplasmic organ |
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| organelles within membrane-bounded units |
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| a group of similar cells organized into a structural and functional unit |
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Term
| hierarchical organization of living systems |
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Definition
1. the cellular level
2. the organismal level
3. the population level
4. ecosystem level
5. emergent properties at every level
6. the biosphere |
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Definition
| body of structure composed of several different tissues grouped in a structural and functional unit |
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group of organs
ex: nervous system-sensory organs |
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Definition
| a group of organisms of the same species living in the same place |
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Definition
| all populations of a particular kind of organism together; its members similar in appearance and able to interbreed |
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| all the populations of different species living together in one place |
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| biological community and the physical habitat within which it lives together constitutes an ecological system |
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| the way in which components interact, and they often cannot be deduced just from looking at the parts themselves |
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Definition
| applies general principles to predict specific results |
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Definition
| the logic flows in the opposite direction, from the specific to the general |
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Definition
| a suggested explanation that accounts for those observations |
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Definition
| factor that influences a process, outcome, or observation |
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| one variable is altered in a known way to test a particular hypothesis |
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| the variable is left unaltered |
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| to understand a complex system by reducing it to its working parts |
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| proposed explanation for some natural phenomenon, often based on some general principle; the body of interconnected concepts, supported by scientific reasoning and experimental evidence, that explains the facts in some area of study |
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Definition
| genetic change in a population of organisms; in general, evolution leads to progressive change from simple to complex |
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Definition
| change in the genetic structure of populations due to selective breeding by humans; many domestic animal breeds and crop varieties have been produced through artificial selection |
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Definition
| the differential reproduction of genotypes; caused by factors in the environment; leads to evolutionary change |
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Definition
| refers to the similar structures that have the same evolutionary origin. |
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Definition
| structures are similar in function bu different in evolutionary origin, such as the wing of a bat an the wing of a butterfly |
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| a pattern of descent generated by analysis of similarities and differences among organisms. modern gene-sequencing techniques have produced phylogenetic trees showing the evolutionary history of individual genes |
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Definition
| all living organisms consist of cells |
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Term
| deoxribonucleic acid (DNA) |
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Definition
| long cable like molecule in which information that specifies what a cell is like - its detailed plan- is stored |
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Definition
| discrete unit of information |
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