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AP Bio-Ch. 8: Cell Respiration Flashcards

McGraw Hill 8th Edition by Sylvia S. Mader. 22 Vocab

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107972465Acetyl-coAMolecular made up of a 2-carbon acetyl group attached to coenzyme A. During cellular respiration, the acetyl group enters the citric acid cycle for further breakdown
107972468AnabolismMetabolic process by which larger molecules are synthesized form smaller ones; anabolic metabolism
107972470AnaerobicGrowing or metabolizing in the absence of oxygen
107972472CatabolismMetabolic process that breaks down large molecules into smaller ones; catabolic metabolism
107972474Cellular respirationMetabolic reactions that use the energy form carbohydrate, fatty acid, or amino acid breakdown to produce ATP
107972476ChemiosmosisAbility of certain membranes to use a hydrogen ion gradient to drive ATP formation
107972478Citric acid cycleCycle of reactions in mitochondria that begins with citric acid. It breaks down an acetyl group and produces CO2, ATP, NADH, and FADH2; also called the Krebs Cycle
107972480CytochromeAny of several iron-containing protein molecules that serve as electron carriers in photosynthesis and cellular respiration
107972481DeaminationRemoval of an amino group (-NH2) form an amino acid or other organic compound
107972482Electron carriermolecules that carry electrons
107972484Electron transport systemPassage of membrane-bound electron carrier molecules from a higher to lower energy level; the energy released is used for the synthesis of ATP
107972486FADFlavid adenine dinucleotide: a coenzyme of oxidation-reduction that becomes FADH2 as oxidation of substrates occurs, and then delivers electrons to the electron transport system in mitochondria during cellular respiration
107972487FermentationAnaerobic breakdown of glucose that results in a gain of two ATP and end products such as alcohol and lactate
107972488GlycolysisAnaerobic breakdown of glucose that results in a gain of two ATP and the end product pyruvate
107972489Metabolic poolMetabolites that are the products of and / or the substrate for key reaction in cells, allowing one type of molecule to be changed into another type, such as carbohydrates converted to fats
107972490MitochondrionMembrane-bound organelle in which ATP molecules are produced during the process of cellular respiration
107972491NAD+Coenzyme of oxidation-reduction that accepts electrons and hydrogen ions to become NADPH + H+ as oxidation of substrate occurs. During cellular respiration, NADH carries electrons to the electron transport system in mitochondria
107972492Oxidative phosphorylationProcess by which ATP production is tied to an electron transport system that uses oxygen as the final acceptor
107972493Oxygen debtAmount of oxygen oxidizes lactic acid produced anaerobically during strenuous muscle activity.
107972494PyruvateEnd product of glycolysis; its further fate, involving fermentation or entry into an mitochondrion, depends on oxygen availability
107972495Substrate-level phosphorlylationProcess in which ATP is formed by transferring a phosphate form a metabolic substrate to ADP
107972496Transition reactionReaction that oxidizes pyruvate with the release of carbon dioxide; results in acetyl-CoA and connects glycolysis to the citric acid cycle.

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