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Bio words chapter 1

Biology 1 words for chapter 1

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 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 molecule that stores genetic information in all organisms.
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 descendants come to differ from their ancestors.
adaptation inherited trait that is selected for over time because it allows organisms 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 the exactness of a measurement.
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.
measurement a 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 tool that provides an enlarged image of an object.
gene specific region of DNA that codes for a particular protein.
molecular genetics study of DNA structure and function on the molecular level.
genomics study and comparison of genomes within a single species or among different species.
biotechnology use and application of living things and biological processes.
transgenic organism whose genome has been altered to contain one or more genes from another organism or species.
Created by: myersm26
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