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Chps 1 & 2 Vocab

Chapters 1 & 2 Vocabulary Words

Life Science The study of living things called?
Model A representation of an object or system.
Theory An explanation that ties together many related facts, observations, and tested hypotheses.
Area A measure of how much surface an object has.
Educated guess A hypothesis.
Scientific Methods The ways in which scientists follow steps to answer questions and solve problems.
Law A summary of many experimental results and observations that rarely changes.
Compound light microscope An instrument that magnifies small objects so that they can be seen easily.
Metabolism The total of all chemical activities a living thing performs.
ATP The molecules that carry most of the energy in the cell.
Stable internal conditions Homeostasis means maintaining
Stimulus A change in an organism's environment that affects the organism's activities.
Nucleotides Nucleic acids are large molecules made up of subunits called what?
Technology The application of science for practical purposes.
Variable A factor that changes in an experiment in order to test a hypothesis.
Mass The amount of matter in an object.
Volume The measure of the size of a boy or region in a three-dimensional space.
Controlled experiment When a control group is compared with one or more experimental groups.