handpf r r C C Hydrogen ions flow down a concentration gradient from the thylakoid space to the stroma through ATP synthase, releasing energy that can be used to produce ATP from ADP + P.. Electrons from the reaction site center of photosystem II are funneled to ATP synthase, which uses the energy to produce ATP from ADP + P.. A hydrogen ion from NADPH is used by ATP synthase to power the production of ATP from ADP + P, and an electron is released, splitting water. Water splits, releasing electrons that flow from the stroma to the thylakoid space and attach to the active site of ATP synthase. Hydrogen ions in the thylakoid space combine with electrons from the stroma at ATP synthase, releasing energy that can be used to produce ATP from ADP + P.. 2 points QUESTION 6 1. Considering the ATP cycle, which of the following would have the most potential energy to perform work for cell activities? C AMP r ADP C adenosine C ATP Hions C C. C Ocean 2 points QUESTION 7 1. In a high latitude rainforest, the dominant type of photosynthesis is most likely to be CC. both C. and CAM. both C. and CAM. CAM. 2 points QUESTION 8 1. A plant that uses CAM photosynthesis is most likely to be successful in what type of environment? cool, dry rhot, moist cool, moist rhot, dry semi-tropical QUESTION 9 2 points