In green and purple bacteria,electrons to reduce CO₂ can come from

Question

Quizplus · Accepted Answer

Green and purple bacteria are anaerobic organisms that can use a variety of electron donors for photosynthesis. In these bacteria, electrons to reduce CO₂ can come from H₂S (hydrogen sulfide) instead of H₂O, which is used in oxygenic photosynthesis. This process is called anoxygenic photosynthesis. Choice A, B, and C are incorrect because they are electron acceptors, not donors. Choice E is incorrect because chlorophyll is a pigment that absorbs light energy, not a source of electrons.

In Green and Purple Bacteria,electrons to Reduce CO₂ Can Come