The combination of chemical reactions through which an organism builds up or breaks down materials
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Homeostasis
The relatively constant internal physical and chemical conditions that organisms maintain
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DNA
The genetic material that organisms inherit from their parents
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natural events
The goals of science are to give explanations for ________, understand patterns, and make predictions.
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Plants
________ and animals are multicellular.
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Stimulus
A signal to which an organism responds
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Cells
The smallest units considered fully alive
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Discoveries
________ lead to new technology and new technology leads to ________.
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forms of life
All ________ on Earth are connected into a biosphere.
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Unicellular organisms
Are made up of only a single cell
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Biology
The study of life
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Theory
A well-tested explanation that unifies a broad range of observations and hypotheses, and enables scientists to make accurate predictions about new situations
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stable internal environment
Living things maintain a(n) ________.
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universal genetic code
Living things are based on a(n) ________.
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Plants
________ get energy from sunlight and take up nutrients from air, water, and soil.
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Data
Evidence; information gathered from observations
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Science
________ is a process, not a "thing.
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plants
Most animals eat ________ or other animals to get both nutrients and energy.
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Science
An organized way of gathering and analyzing evidence about the natural world
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Observation
A process of noticing and describing events or processes in a careful, orderly way
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Hypothesis
A possible explanation for a set of observations or a possible answer to a scientific question
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Controlled experiment
An experiment in which only one variable is changed
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Control group
The group in an experiment that is exposed to the same conditions as the experimental group except for one independent variable
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ex
people want cars that do not cause air pollution
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Bias
A particular preference or point of view that is personal, rather than scientific
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Biosphere
The part of Earth in which life exists, including land, water, and air or atmosphere
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Sexual reproduction
Most plants and animals engage in _______, in which cells from two parents come together to form the first cell of a new living thing.
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Asexual reproduction
Other living things reproduce through _______, in which a single living thing makes offspring exactly the same as itself.
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Global ecology
Explores how the world is affected by everything that living things do
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Biotechnology
A field based on the ability to read, write, and edit the genetic code
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Metric system
A system of measurement in which units are based on multiples of 10
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Inferences
Ideas based on what is already known
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Independent variable
The variable that changes
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Dependent variable
The variable that is observed and that changes because of modifications to the independent variable
Studied by 13 people
Note 
Flashcard (124)