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Biology Ch. 1
Term | Definition |
---|---|
Science | Knowledge gathered over time |
Observation | The act of noticing and describing events or processes |
Inference | Logical interpretation based on observations |
Hypothesis | Scientific explanation for a set of observations that can be tested in ways that support or reject it. If, then, b/c statements. |
Controlled Experiment | Experiment in which only one variable is changed. |
Independent Variable | Factor in a controlled experiment that is deliberately changed. |
Dependent Variable | Factor that is observed and that changes in response to the independent variable. |
Control Group | Group in an experiment that is exposed to the same conditions as the experimental group except for one independent variable group that stays the same throughout the experiment. |
Data | Evidence, information gathered from observations. |
Theory | well-tested explanation that unifies a broad range of observations and hypotheses, and enables scientists to make accurate predications about new situations. |
Bias | Particular preference or view point that is personal, rather than scientific |
Biology | Scientific study of life. |
DNA | Genetic material that organisms inherit from their parents. |
Stimulus | Signal to which an organism responds. |
Sexual Reproduction | Type of reproduction in which cells from two parents unite to form the first cell of a new organism. |
Asexual Reproduction | Type of reproduction involving a single parent that results in offspring that are genetically identical to the parent. |
Homeostasis | Relatively constant internal physical and chemical conditions that organisms maintain. |
Metabolism | The combination of chemical reactions through which an organism builds up or breaks down materials. |
Biosphere | Part of the Earth in which life exists including land, water, and air or atmosphere. |