BIOL 2100 Lecture Notes - Lecture 8: Exergonic Reaction, Atp Hydrolysis, Metabolic Pathway
9 May 2016
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8. 1: an organism"s metabolism transforms matter and energy, subject to the laws of thermodynamics. Metabolism- the totality of an organism"s chemical reactions: emergent property of life that arises from orderly interactions between molecules. Organization of the chemistry of life into metabolic pathways: 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 specific enzyme: mechanisms that regulate enzymes balance metabolic supply and demand, metabolism as a whole manages the material and energy resources of the cell. Catabolic pathways- metabolic pathways that release energy by breaking down complex molecules into simpler compounds; degradative. Cellular respiration: sugar glucose and other organic fuels are broken down in the presence of oxygen to carbon dioxide and water. Anabolic pathways- consume energy to build complicated molecules from simpler ones. Synthesis of an amino acid from simpler molecules.
