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Cambell biology chapter 9 Flashcards

For exam #3

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423056782redox reactionA chemical reaction involving the complete or partial transfer of one or more electrons from one reactant to another.1
423056783reductionThe complete or partial addition of electrons to a substance involved in a redox reaction2
423056784oxidationThe complete or partial loss of electrons from a substance involved in a redox reaction.3
423056785acetyl CoAThe entry compound for the citric acid cycle in cellular respiration, formed from a fragment of pyruvate attached to a coenzyme.4
423056786cytochromeAn iron-containing protein that is a component of electron transport chains in the mitochondria and chloroplast and also in the plasma membrane of synthesis of ATP.5
423056787chemiosmosisAn energy coupling mechanism that uses energy stored in the form of a hydrogen ion gradient across a membrane to drive cellular work, such as synthesis of ATP.6
423056788proton motive forcethe potential energy store in the form of a proton electrochemical gradient, generated by the pumping of hydrogen ions across a biological membrane during chemiosmosis7
423056789NADA derivative of the vitamin niacin that acts as an electron carrier is a coenzyme called ______.8
423056790lactic acidType of fermentation that can make muscles sore9
423056791oxidizing agentThe electron acceptor in a redox reaction.10
423056792aerobic respirationA catabolic pathway for organic molecules, using oxygen as the final electron acceptor and ultimately producing ATP.11
423056793facultativeOrganisms that can make enough ATP to survive using either fermentation or aerobic respiration.12
423056794alcoholType of fermentation that produces ethanol13
423056795oxidative phosphorylationThe production of ATP using energy derived from the redox reactions of an electron chain; the 3rd major stage of cellular respiration.14
423056796electron transport chainA sequence of electron carrier molecules that shuttles electrons down a series of redox reactions that release energy used to make ATP.15
423056797glycolysisA series of reactions that ultimately splits glucose into pyruvate.16
423056798fermentationA partial degradation of sugars or other organic fuel that occurs without the use of oxygen.17
423056799reducing agentThe electron donor in a redox reaction.18
423056800obligateOrganisms that can only carry out fermentation or anaerobic respiration.19
423056801citric acid cycleA chemical cycle involving 8 steps that completes the metabolic breakdown of glucose molecules began in hydrolysis.20
423056802beta oxidationA metabolic sequence that breaks fatty acids down to 2 - carbon fragments that enter the citric acid cycle as acetyl CoA.21

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