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Biochemistry Flashcards

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5091529480first law of thermodynamicstotal energy of a system and its surroundings is always constant; it is neither created or destroyed, but can change forms0
5091532951second law of thermodynamicsthe total entropy of a system and its surroundings i.e. the universe, always increases1
5091535994entropya measure of the randomness or disorder of a system2
5091538472spontaneous processa process that occurs in a system without any input of energy from the surroundings3
5091579941delta G < 0the reaction is spontaneous from left to right. exergonic, or energy-releasing4
5091582269delta G > 0non-spontaneous. endergonic, or energy-consuming5
5091587304delta G = 0is at equilibrium6
5091608748monosaccharideone monomeric unit. glucose, fructose, ribose, galactose7
5091614579polysaccharide> 20 monosaccharides units, starch glycogen8
5091619361oligosaccharide2- 20 monosaccharide units sucrose, lactose9
5091621377sugarsmonosaccharides and disaccharides are commonly referred to as10
5091630436glycosidic bondtwo simple sugar molecules can be joined in tandem, when a OH group of onesugardisplaces the OH group on the other sugar's anomeric carbon11
5091632221glycogenanimal storage form of glucose12
5091632222starchplant storage form of glucose13
5091634328celluloseconstituent of plant cell walls14
5091640864catabolismthe degradative phase of metabolism15
5091642371anabolismthe synthesis phase of metabolism16
5091672687fermentationthe process that breaks down an energy-rich molecule17
5091698124reduction potentiala measure in volts of the affinity for electrons18
5091701657reductantoxidant + e-19
5091704592rotenoneblocks electron transfer in complex I20
5091707317antimycin Ablock e- transfer in complex II21
5091710456CN, COblock e- transfer in complex IV22
5091715548reactionslight-dependant and Carbon- assimilation23
5091719253light-dependent reactionresults in the production of O2,NADPH,and ATP24
5091723030carbon-assimilation reactionATP and NADPH are used to convert CO2 to hexose phosphates25
5091728914thylakoid membranelight reactions take place here26
5091731807chlorophylllight harvesting pigments in plants27
5091740463photophosphorylationthe synthesis of ATP coupled to light-driven electron transport28
5091752206stromaCarbon- assimilation reaction takes place in29
5091757126calvin cyclecarbon- fixation reactions30
5091774597cytosolwhere sucrose is synthesized31
5091776265chloroplastswhere starch is synthesized32
5091784224reciprocal regulationopposing pathways are regulated in inverse directions, stimulating one pathway inhibits the other33
5091799112glucagonstimulates glycogen breakdown and inhibits glycogen synthesis34
5091801439high blood glucoseinsulin stimulates glycogen synthesis and inhibits glycogen synthesis and inhibits glycogen breakdown35

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