There are two major products of photosynthesis—water and organic substances such as glucose. How would the presence of DPIP (2,6-Dichlorophenol-Indophenol, electron accepting compound) affect the production of oxygen during the light reaction? How would the presence of DPIP affect the production of organic product during the dark reaction?
What role did another artificial electron acceptor, ferricyanide, play in elucidating the process of photosynthesis?
2007-01-02 14:18:52 · 2 answers · asked by dthepoolpro 1 in Science & Mathematics ➔ Biology
By accepting electrons, DPIP will speed up electron flow, water splitting and oxygen production.
DPIP ain't NADPH so I would imagine thed dark rxn would probably be inhibited.
2007-01-02 14:26:57 · answer #1 · answered by ivorytowerboy 5 · 1⤊ 1⤋
Well, first off it's DCPIP. Secondly, ignore the first answer. Electrons are freed by the splitting of water and it is these electrons which are absorbed by DCPIP - hence the rate at which water is split is NOT affected. However, DCPIP steals electrons from the electron transport chain of the thylakoid membrane. Therefore ATP and NADPH production is reduced. Because these molecules transfer energy to the dark cycle, glucose production will also drop.
I don't want to do all your homework for you so I'll leave you to ponder the rest of your questions.
2007-01-03 01:44:20 · answer #2 · answered by jowpers 2 · 1⤊ 0⤋