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Biolgy Chapter 1

terms for chapter 1

TermDefinition
science organized way of gathering and analyzing evidence about the natural world
observation process of noticing and describing events or processes in a careful, orderly way
inference a logical interpretation based on prior knowledge and experience
hypothesis possible explanation for a set of observations or possible answer to a scientific question
controlled experiment experiment in which only one variable is changed
independent variable factor in a controlled experiment that is deliberately changed; also called manipulated variable
dependent variable variable that is observed and that changes in response to the independent variable; also called the responding variable
control group group in an experiment that is exposed to the same conditions as the experimental group except for one independent variable
data evidence; information gathered from the observations
theory well-tested explanation that unifies a broad range of observations and hypotheses, and enables scientist to make accurate predictions about new situations
bias particular preference or point of view that is personal, rather than scientific
biology scientific study of life
DNA a self-replicating material present in nearly all living organisms as the main constituent of chromosomes
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 process 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 earth in which life exists including land, water, and are or atmosphere
Created by: MochrieI17
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