A diagram of chloroplast stroma and thylakoid lumen showing chemical energy, ferredoxin, ferredoxin-N A D p reductase, A D P synthase, and oxygen-evolving complex. Which corrections would change the diagram to accurately model the light-dependent reaction of photosynthesis? Check all that apply. CO2 should be changed to H2O. ADP and ATP need to be switched. e– should be changed to H . Chemical energy should be changed to light energy. PSII and PSI need to be switched.

Answers 3

Given the process of photosynthesis is used to produce ATP in the presence of light and water, the first, second, and fourth options are what need to be changed.

Photosynthesis is the process by which certain organisms transform light energy into chemical energy in the form of ATP. The first option states that CO2 should be changed to H2O, which is correct. This is due to the fact that photosynthesis oxidizes H2O in order to produce a molecule of oxygen.

Option 2 is also correct in that the diagram should show ATP instead of ADP, given that photosynthesis is used by organisms to produce ATP as the primary energy product. To carry out the function, the enzyme used is ATP synthase, which is what the diagram should reflect.

Finally, we should also choose option 4, which states that chemical energy should be switched with light energy. As previously states, photosynthesis uses light energy to produce chemical energy. Though chemical energy is produced, it is the final product and does not participate in the process, light energy does.

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, Quick Answer: CO2 should be changed to H2O; ADP and ATP need to be switched; e– should be changed to H ; Chemical energy should be changed to light energy; PSII and PSI need to be switched. Full Explanation: Photosynthesis is a process wherein plants use the energy from the sun to convert carbon dioxide (CO2) and water (H2O) into sugars using the energy of sunlight. The light-dependent reaction of photosynthesis occurs on the thylakoid membrane within the chloroplast, and involves the transfer of electrons from the stroma to the lumen environment. The diagram needs to be corrected in order to accurately model this reaction. First, CO2 needs to be changed to H2O, as this is the molecule that undergoes reduction rather than CO2. Second, ADP and ATP need to be switched, as the original diagram has ADP as an input and ATP as an output, when it should be the other way around. Third, e– needs to be changed to H , as electrons are transferred from the stroma to the lumen as protons, rather than electrons. Fourth, chemical energy needs to be changed to light energy, as this is the source of energy for the light-dependent reaction of photosynthesis. Finally, PSII and PSI need to be switched, as the light-dependent reaction involving transfer of electrons occurs in PSII, while the light-independent reaction involving the production of ATP occurs in PSI.
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