lecture 5 energy conversion in eukaryotic cells 1. introduction to metabolism. 2. forms of energy....

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Introduction to Metabolism  The totality of an organism’s chemical reactions is called metabolism.  Metabolism is an emergent property of life that arises from interactions between molecules within the cell.  A metabolic pathway begins with a specific molecule, which is then altered in a series of defined steps, resulting in a certain product.  Each step of the pathway is catalyzed by a specific enzyme: