Chapter 1: The Science of Biology ( Definition)

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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 orderly way
Inference
A logical interpretation
Hypothesis
Is a scientific explanation for a set of observations that can be tested in ways that support or reject it
Controlled experiment
Experiment in which only on variable is changed
Independent Variable
The variable that is deliberately changed
Dependent Variable
The variable that is observed and that change in response to the independent variable
Control group
Exposed to the same condition as the experimental group except for one independent variable
Data
Scientists make detailed records of experimental observations gathering information
Theory
Well- tested explanation that unifies a broad observation and hypothesis and enables scientists to make a accurate predications about new situations
Bias
A particular preference or a point of view that is personal rather than scientific
Biology
The study of life
Stimulus
A signal to which an organism responds
Homeostasis
Relatively Constant internal physical condition organisms maintain
Metabolism
The combination of chemical reactions through which an organism builds up or breaks down materials
DNA
All organisms store the complete information they need to live, grow and reproduce in a genetic code written in molecule
Sexual reproduction
Two parents United to form the first cell of a new organism
Asexual reproduction
A single organism reproduce offspring identical itself
Biosphere
Living
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