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Biology 112 Chapters 1-2 study guide.
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Cell Theory
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ALL organisms are made up of cells, and EVERY cell comes from pre-existing cells.
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Terms in this set (38)
Cell Theory
ALL organisms are made up of cells, and EVERY cell comes from pre-existing cells.
FOUR major elements found in most living organisms (COHN)
Carbon, Oxygen, Hydrogen and Nitrogen.
Atomic Number
Number of protons
Atomic Mass
protons AND neutrons= no charge.
Isotopes
Elements with the SAME number of protons, and DIFFERENT number of NEUTRONS.
