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AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

AP Biology Chapter 8 Flashcards

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7352477075metabolic pathwayA series of chemical reactions that either builds a complex molecule or breaks down a complex molecule into simpler compounds.0
7352477076catabolic pathwayA metabolic pathway that releases energy by breaking down complex molecules to simpler compounds.1
7352477077anabolic pathwayA metabolic pathway that consumes energy to synthesize a complex molecule from simpler compounds.2
7352477078bioenergeticThe study of energy flow or energy transformations into and within living systems.3
7352477079energyThe ability to cause change.4
7352477080kinetic energyThe energy an object has due to its motion.5
7352477081thermal energyKinetic energy associated with the random movement of molecules or atoms.6
7352477082potential energyThe energy that an object has because it's position, shape, structure, location, or condition.7
7352477083chemical energyA form of potential energy that is stored in chemical bonds between atoms.8
7352477084thermodynamicsThe study of energy transformations that occur in a collection of matter.9
7352477085first law of thermodynamicsEnergy can be transferred and transformed, but it cannot be created or destroyed.10
7352477086entropyA measure of disorder or randomness.11
7352477087second law of thermodynamicsEvery energy transfer or transformation increases the entropy of the universe.12
7352477088spontaneous processA process that can occur without an input of energy.13
7352477089free energyMeasures the portion of a system's energy that can perform work when temperature and pressure are uniform throughout the system, as in a living cell.14
7352477090exergonic reactionReaction that proceeds with a net release of free energy.15
7352477091endergonic reactionReaction that absorbs free energy from its surroundings.16
7352477092energy couplingThe use of an exergonic process to drive an endergonic one.17
7352477093ATPA molecule used to store energy temporarily in organisms. The molecule is broken down to release energy to drive metabolic processes. Contains the sugar ribose, with the nitrogenous base adenine and a chain of three phosphate groups bonded to it.18
7352477094enzymeA protein that increases the rate of a chemical reaction without being changed by the reaction.19
7352477095catalystA substance that initiates or accelerates a chemical reaction without itself being affected20
7352477096activation energyThe amount of energy needed for a reaction to occur.21
7352477097substrateThe reactant on which an enzyme works.22
7352477098enzyme-substrate complexA temporary complex formed when an enzyme binds to its substrate molecule(s).23
7352477099active siteThe part of an enzyme molecule where a substrate molecule attaches (by means of weak chemical bonds); typically, a pocket or groove on the enzyme's surface.24
7352477100induced fitThe change in shape of the active site of an enzyme so that it binds more snugly to the substrate, induced by entry of the substrate.25
7352477101cofactorAny nonprotein molecule or ion that is required for the proper functioning of an enzyme. They can be permanently bound to the active site or may bind loosely with the substrate during catalysis.26
7352477102coenzymeIf the cofactor is an organic molecule.27
7352477103competitive inhibitorAn enzyme inhibitor that competes with substrate for binding at the active site of teh enzyme. When the it is bound, no product can be made.28
7352477104noncompetitive inhibitorA substance that reduces the activity of an enzyme by binding to a location remote from the active site, changing its conformation so that it no longer binds to the substrate.29
7352477105allosteric regulationThe binding of a regulatory molecule to a protein at one site that affects the function of the protein at a different site.30
7352477106feedback inhibitionA method of metabolic control in which the end product of a metabolic pathway acts as an inhibitor of an enzyme within that pathway.31
7352477107Exergonic reaction32
7352477108Endergonic reaction33
7352477109ATP34
7352477110Normal binding35
7352477111Competitive inhibition36
7352477112Noncompetative inhibition37
7352477113Feedback inhibition38
7352477114Allosteric regulation39

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