1.What is the difference in the end products of photosynthesis in plants purple bacteria,and green-sulfur bacteria?

2.The herbacide atrazine binds to the quinone-binding site of photosystem II and blocks the formation of plastoquinon. What effect would atrazine have on a) O2production b)ATP production c)NADPH production

3.Calculate the free energy change for the light dependant reaction of photosynthesis in plants.How many moles of ATP could theoretically be synthasized using this energy?

4. Some green sulfur bacteria produce NADH as a result of light obsorption. This process requires H2S as an electron donor. Write a balanced equation for the light-dependant reactions for photosynthesis in these bacteria.