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AP Bio - Energy Flashcards

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5804753400ATPThe energy currency of cellular metabolism0
5804766429PhosphorylationChemical reaction resulting in the addition of a phosphate group to an organic molecule.1
5804774233OxidationLoss of an electron by an atom or molecule; often results in loss of a hydrogen ion as well.2
5804782728ReductionThe gain of an electron by an atom or molecule, often with an associated proton.3
5804796462FermentationAnaerobic respiration; extraction of energy from organic compounds without the use of oxygen.4
5804806512Citric Acid Cycle (Krebs Cycle)A series of reactions in the mitochondrial matrix that produces energy carriers (NADH, FADH2, ATP) and carbon dioxide5
5804828506GlycolysisThe anaerobic breakdown of glucose into two molecules of pyruvate; precursor to aerobic respiration6
5804834007Electron Transport ChainThe passage of electrons through a series of molecules embedded in the mitochondrial or chloroplast membranes.7
5804838938ChemiosmosisThe generation of ATP through an accumulation of protons on one side of a mitochondrial or chloroplast membrane.8
5804853947ATP SynthaseAn enzyme in the membranes of chloroplasts or mitochondria that uses energy from the concentration of protons (created by chemiosmosis) to synthesize ATP.9
5804872518Light ReactionsLight energy is captured and used to produce ATP and NADPH in the thylakoid membrane of chloroplasts10
5804886015Calvin CycleA series of reactions in the chloroplast that use ATP, NADPH, and carbon dioxide to produce glucose.11
5804895198ThylakoidDisk-like membranes inside the chloroplast where the light reactions of photosynthesis take place.12
5804898117NADHAn reduced energy carrier created by the Krebs cycle during cellular respiration that delivers high energy electrons used by the electron transport chain.13
5804905992FADH2An reduced energy carrier created by the Krebs cycle during cellular respiration that delivers high energy electrons used by the electron transport chain.14
5804907234NADPHA reduced energy carrier created by the Light Reactions of photosynthesis that delivers high energy electrons used to fuel the Calvin Cycle15
5804924872PyruvateA 3-carbon molecule produced by the digestion of glucose during glycolysis16
5805263376PhotophosphyorylationThe synthesis of ATP from ADP during the light reactions using energy from sunlight17
5805276994PhotosystemA complex composed of chlorophyll, other pigments, and proteins that traps light energy as excited electrons.18
5805282775PhotolysisThe separation of water into oxygen and hydrogen in the presence of light energy19
5805293628Carbon FixationThe binding of carbon dioxide to a sugar as the first step in synthesis of glucose during photosynthesis20
5805300114RubiscoAn enzyme in plants that catalyzes the binding of atmospheric carbon dioxide to an organic compound21
5805311828StomataA small opening bordered by guard cells on the underside of a leaf that allows for gas exchange and transpiration22
5805317714TranspirationThe loss of water vapor by plant parts, caused mainly by evaporation of water leaving the stomata23
5805322064PhototropismIn plants, a growth response to a light stimulus24
5805327463PhotoperiodismWhen biological reactions vary based on the duration of day and night.25

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