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Biology Ch. 1

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.
Created by: rhacker