IMG_0004_NEW_0012

IMG_0004_NEW_0012 - cell. , ^ M- ,Vz"+ Rt t^...

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4) Indicate whether the entropy change for each of the following processes is positive or negative, and explain your choice. (a) water freezes - (b) water evaporates t (c) dry ice sublimes f (d) sodium chloride dissolves in water -;- (e) several different types of lipid molecules assemble to form a membrane - (f) a cell combusts glucose in order to obtain energy for cellular work 1 5) Oxaloacetate is formed by oxidation of malate: L-malate + NAD+ + oxaloacetate + NADH + H+ AG"' of this reaction is +7.0 kcal/mole. Suggest how this reaction can proceed in the 6) Consider the conversion of glucose to glucose{-phosphate: direction of oxaloacetate production in the
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Unformatted text preview: cell. , ^ M- ,Vz"+ Rt t^ Cov'lnu{t)'Lt'Awut{) ' "" C r,rotttnl LNAfJ Glucose + phg$are =J glucose-6-phosphate + AG"' of thislreaction is +3.3 kcaVmole. (a) Is this reaction favorable? Explain c t) m (b) Suppose the synthesis of glucose-6-phosphate is coupled with the hydrolysis of ATP. ATP +yz6-+ ADP + pno;;ffi AG"'6f this reaction is -7.Tkcal/mole. Write the overall equation of the coupled process and calculate the AG"'o{he coupled reaction. Is the production of glucose-6-phosphate favourable? Explain - Ie-z G(,,,,c"v + pW + ArP = Ch,uae- e-p@A*A + Ary K4'= *73+?.) = -+ kor,(/rrJe...
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