Question

24) What are the products of cyclic electron flow during the light reactions of photosynthesis? A) hent and fluorescence B) ATP C) ATP and NADPH D) ADP and NADP+ 25) What is the relationship between the wavelength of light and the quantity of energy per photon? A) They have a direct, linear relationship. B) They are inversely related C) They are logarithmically related D) They are separate phenomena. OPEN QUESTIONS (VARIOUS POINT VALUES): 26) In the space below, draw an energy curve for reactions with the indicated change in free energy On the curve, label the AG and the activation energy (4 POINTS) AG = -32 kcal/mol AG = +32 kcal/mol Free energy Free energy Progress of reaction Progress of reaction 27) For a given reaction the AG is +6.5 kcal/mol. a) Will this reaction occur spontaneously? (1 POINT) b) What will the overall AG be when this reaction is coupled with ATP hydrolysis? (2 PO c) Will this reaction occur spontaneously when coupled with ATP hydrolysis? (1 POIN"

Answer 1

24) B. ATP is the only product during cyclic electron flow. it is a observed in choloroplast of green plants and ony single photosystem is in role that is P700.ATP and NADPH are the products of noncyclic electron flow where both PS1 and PS2 are involve.NADP acts as electron acceptor for non cyclic electron flow which accepts 2 molecules from reduced ferrodoxin and transfer it to NADP to NADPH.

25) B. they are inversely propotional expalined by max planck equation that is lobger the wavelength shorter is the frequency(energy per photon)

27) a. As delta G is positive the reaction require energy hence it is non spontaneous.

b.When the reaction is coupled with ATP hydrolysis it leads to production of more energy i.e. deltaG<0 but for the given reaction where we have positive delta G value there delta G >0, so energy is decreases.

c . Yes.

26) the answer is in the image attach herewith

26 DG = -32 kcal/mol energy Reactent free Product Progress of reaction DGE +32 kcal/mol un abbrows my Produch Reaclant progress of reaction