25.When oxygen is released as a result of photosynthesis, it is a direct by-prod

Question

25.When oxygen is released as a result of photosynthesis, it is a direct by-product of a. reducing NADP+ b. splitting water molecules. c. chemiosmosis. d. the electron transfer system of photosystem I. e. magical elves squeezing oxygen-farting unicorns 26. Which of the events listed below occurs in the light reactions of photosynthesis? a. NADP+ is produced. b. NADPH is reduced to NADP c. Carbon dioxide is incorporated into PGA. d. ATP is dephosphorylated to yield ADP. e. Light is absorbed and funneled to reaction-center chlorophyll a. 27. What are the products of linear (non-cyclic) photophosphorylation? a. heat and fluorescence b. ATP and P700 c. ATP and NADPH d. ADP and NADP e. P700 and P680

Explanation / Answer

25. The answers are b. spilitting water molecules.
To fill the electron gap at p680, the water molecule discossiates at OEC as 2H+, 1/2 O2 and 2e-. The 2e- transfers to p680, the protons moves in to stroma and the 1/2 O2 releases to outerside.

26. The answer is e. Light is absorbed and funneled to reaction centre, chlorophyll a.
During the light reaction, the NADP+ convertes in to or reduces in to NADPH and ADP+Pi turns in to ATP.

27. The answer is c.ATP and NADPH.

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