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biogoly honors chapter 1 vocab

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Term
Definition
biosphere   all organisms and the part of the earth where they exist.  
biodiversity   variety of life within an area.  
species   a group of organisms so similar to one another that they can breed and and produce fertile offspring.  
biology   the scientific study of all forms of life.  
science   the knowledge obtained by observing natural events and conditions.  
organism   an individual living thing.  
cell   basic unit of life.  
metabolism   all chemical processes that synthesize or breakdown 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.  
adaption   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; 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.  
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   organisms whose genome has been altered to contain one or more genes from another organism or species  


   






 
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