Question

Typical bacterial photosynthesis takes place using a single photosystem, but cyanobacterial photosynthesis uses two photosystems. (a)...

  1. Typical bacterial photosynthesis takes place using a single photosystem, but cyanobacterial photosynthesis uses two photosystems.

(a) What is the process of bacterial photosynthesis called

(b) What does bacterial photosynthesis generate

(c) How is NADPH (reducing power) generated in bacterial photosynthesis

(d) What is generated in cyanobacterial photosynthesis?

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Answer #1

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A. The typical bacterial photosynthesis is Anoxygenic proces. The proces does not liberate O2. It liberates other substances based on the reducing power it gets from. So it is called Anoxygenic photosynthesis.

B. The purple bacteria and green sulphur bacteria generate Sulphur instead of O2. This is because, the purple bacteria gets its reducing power from H2S.

C. In purple bacteriaand green sulphur bacteria, the reducing power is obtained from H2S instead of water. So the H+ ions come from H2S, liberating S in to the atmosphere.

D. Cyanobacteria use H2O as the source of reducing power. They perform Oxygenic photosynthesis as the higher plants. So cyanobacteria generate sugars and also O2 gas .

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