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Bio 1101 Exam 3

Energy the capacity to do work, either actively or stored for later.
Exergonic an energy yielding process- composed of exothermic and exophotic
Endergonic an energy requiring process- composed of endothermic and endophotic
Entropy(S) a measure of randomness in a system
Free energy energy which is available to do work
Gibbs free energy exchange the change n heat minus the change in entropy multiplied by the absolute temperature
First law of thermodynamics the total energy in the universe is constant and therefore energy can NOT be created nor destroyed
Second law of thermodynamics in the universe, the total amount of free energy available for doing work is declining because this energy is being lost in some other energy form
Oxidation loss of an electron
Reduction the gain of an electron
Metabolism the sum of all energy exchanges that occur through chemical reactions
Anabolism all chemical reactions involved in biosynthesis (building up)
Catabolism all chemical reactions involved in the degradation of larger particles (breaking down)
Enzymes water-soluble proteins which lower the activation energy of chemical reactions in living cells
Cofactors change the shape of enzymes to help them fit and process their respective substrate
ATP how your body stores energy
Phosphorylation the process of making ATP
Photophosphorylation the use of light to make ATP
Oxidative Phosphorylation the use of oxygen to make ATP
Enzymes are mad up of amino acid monomers
Combination A+B+E----AB-E----AB+E
Dissociation AB+E----AB-E-----A+B+E
Active site where the enzyme chemically alter the substrate
Catalyst affect but do NOT chemically change themselves during the reaction
Enzymes have an optimum temperature 37 degrees C= 98.6 degrees F
Irreversible Inhibition binding of chemically active substance to key R-groups which causes permanent damage/death.
Noncompetitive Inhibition reversible if treated in time; a chemically related substrate occupies another site besides the active site to cause temporary change in the enzymes shape
Competitive Inhibition reversible; a chemically related substrate occupies the active site
Allosteric Interaction the "other shape"; involved in negative feedback control of enzymes/hormones
Allosteric Effectors cofactors, coenzymes, or a product made by the enzyme
Created by: twymbs