3) a) One molecule of NADPH has more potential chemical energy than NADP+.   Explanation: NADPH has more energy compared to NADP+, because NADPH is in reduced state (high energy form), whereas NADP+ is in oxidized state (low energy form). NADP+ obtains electron and hydrogen ion to form NADPH.   b) One molecule of Glyceraldehyde 3 phosphate has more potential chemical energy than 3 molecules of carbon dioxide.   Explanation: In the Calvin cycle, one molecule of G3P (Glyceraldehyde 3 Phosphate) is formed by 3 molecules of CO2 (carbon dioxide). Also, ATP and NADPH are required for G3P synthesis. Thus, G3P has more energy compared to 3 molecules of CO2.     4) a) Three carbon atoms are fixed during production of one molecule of G3P. And these carbon ato ... See the full answer