19 terms

Biology Chapter 1.1-1.3

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science
Is an organized way of gathering and analyzing evidence about the natural world
observation
The act of noticing and describing events or processes in a carful, orderly way
inference
Is a logical interoperation based on what scientists already know
hypothesis
Is a scientific explanation for a set of observations that can be tested in ways that support or reject it
controlled experiment
All other variables should be kept unchanged, or controlled
independent variable
The variable that is deliberately changed
dependent variable
Is a variable that is observed and change in response to the independent variable
control group
Is a group that is exposed to the same conditions as the experimental group except for one independent variable
data
Are detailed records of experimental observations
theory
Is a well-tested explanation that unifies a broad range of observations and hypotheses
bias
Is a particular preference or point of view that is personal, rather than scientific
biology
Is the study of life
DNA
Is the complex information they need to live, grow, and reproduce in a genetic code written in a molecule
stimulus
Is a signal to which an organism responds
sexual reproduction
Cells from two parents unite to form the first cell of a new organism
asexual reproduction
Is in which a single organism produces offspring identical to itself
homeostasis
All organisms need to keep their internal environment relatively stable, even when external conditions change dramatically
metabolism
The combination of chemical reactions through which an organism builds up or breaks down material
biosphere
Living planet