Anatomy and Physiology Elana Schlansky

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3 Major types of chemical reactions:

-Synthesis reaction: when atoms or molecules combine to form a larger more complex molecule. Always involves bond formation. ex. A+B->AB. conspicuous in rapidly growing tissues.

- Decomposition reaction: occurs when a molecule is broken down into smaller molecules or its constituent atoms. ex. AB->A+B. bonds are broken instead of formed.

-Exchange reactions: involve both synthesis and decomposition; bonds are both made and broken. Parts of the reactant molecules change partners producing different product molecules. ex. AB+C-> AC+B and AB+CD->AD+CB

-Oxidation-reduction reactions (redox reactions): are decomposition reactions in that they are the basis of all reactions in which food fuels are catabolized for energy. Electrons are exchanged between the reactions. The reactant losing the electrons is the electron donor and is said to be oxidized and the reactant taking the transferred electron is called the electron acceptor and is said to be reduced.

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Anatomy and Physiology Elana Schlansky

By ElanaSchlansky

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