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Chapter 1 Lesson 1

What Is Life

OrganismA living thing
Cell The basic unit of structure and function in living things.
Unicellular Made of a single cell
Multicellular Consisting of many cells
Response An action or change in behavior that occurs as a result of a Stimulus
Stimulus Any change or signal in the environment that can make an organism react in some way
Asexual Reproduction A reproductive process that involves only one parent and produces offspring that are genetically identical to the parent
Sexual Reproduction A reproduction process that involves two parents that combine their genetic material to reproduce a new organism which differs from both parents
Development The process of change that occurs during an organism's life to produce a more complex organism
Autotroph An organism that is able to catch energy from sunlight or chemicals and use it to produce it's own food
Controlled Experiment An experiment in which only one variable is manipulated at a time
Heterotroph An organism that cannot make its own food and gets food by consuming other living things
Homeostatis The condition in which an organism's internal environment is kept stable in spite of changes in the external environment
Metabolism The combination of chemical reactions through which an organism builds up or breaks down materials
Spontaneous Generation The mistaken idea that living things arise from non-living things
Organism A living thing
Created by: 0005335stu
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