Since purple and green bacteria do not use water in their autotrophic processes, they are not photosynthetic.

Question

Quizplus · Accepted Answer

Purple and green bacteria are photosynthetic, but use different electron donors and acceptors than the more well-known oxygenic photosynthetic organisms. They use cyclic and non-cyclic electron transfer pathways, and do not produce oxygen as a byproduct of photosynthesis. However, they still use light energy to power the conversion of CO2 into organic compounds.

Since Purple and Green Bacteria Do Not Use Water in Their