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Chapter 1 Biology

Chapter 1

biosphere All living things and all the places they are found on the Earth.
biodiversity The variety of organisms in a given area.
species Group of organisms that are closely related and can produce fertile offspring.
biology The scientific study of living things and their interactions with the environment.
science The knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or variables that can be tested.
organism Any individual living thing.
cell Basic unit of life.
metabolism The chemical processes that build up or break down materials.
DNA The genetic material that contains the information that determines inherited in a molecule.
system An organized group of related parts that interact to form a whole.
ecosystem A community of organisms and their physical environment.
homeostasis The maintenance of constant internal conditions in an organism.
evolution The change in living things over time.
adaption An inherited trait that gives an advantage to individual organisms and is passed on to future generations.
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 experiments.
independent variable The condition that is changed in an experiment.
dependent variable The experimental data collected through observation and measurement.
constant The conditions that do not change in an experiment.
theory A proposed explanation for a wide range of observations and experimental results that is supported by a wide range of evidence.
measurement The determination of the dimensions of something using a standard unit.
accuracy A description of how close a measurement is to the true value of the quantity measured.
precision The exactness of a measurement.
microscope A tool that provides an enlarged image of an object.
gene A segment of DNA that stores genetic information.
molecular genetics The study and manipulation of DNA on a molecular level.
genomics The study of Genomes both within and across species.
biotechnology The use and application of living things and biological processes.
transgenic Organisms that have genes from more than one species or have altered copies of their own genes.
Created by: meiserk21



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