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Biology 1.1-1.3

TermDefinition
biosphere all organisms and the part of Earth where they exist.
biodiversity variety of life within an area.
species group of organisms so similar to one another that they can breed and produce fertile offspring.
biology scientific study of all forms of life.
science science the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested.
organism any individual living thing
cell basic unit of life
metabolism all chemical processes that synthesize or break down materials within an organism.
DNA a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
system changing, organized group of related parts that interact to form a whole.
ecosystem collection of organisms and nonliving things, such as climate, soil, water, and rocks, in an area.
homeostasis regulation and maintenance of constant internal conditions in an organism.
evolution change in a species over time; process of biological change by which descendents come to differ from their ancestors.
adaptation inherited trait that is selected for over time because it allows organism to better survive in their environment.
observation using the senses to study the world; using tools to collect measurements; examining previous research results
data observations and measurements recorded during an experiment.
hypothesis proposed explanation or answer to a scientific question.
experiment process that tests a hypothesis by collecting information under controlled conditions.
independent variable condition or factor that is manipulated by a scientist during an experiment.
dependent variable experimental data collected through observation and measurement.
constant condition that is controlled so that it does not change during an experiment.
theory proposed explanation for a wide variety of observations and experimental results.
Created by: BrisbenM25
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