What do some photosynthetic bacteria use as a source of electrons...

Question

What do some photosynthetic bacteria use as a source of electrons instead of water?
a. oxygen (O2)
b. hydrogen sulfide (H2S)
c. organic compounds (e.g., CH3COO−)
d. nitrate (NO3-)

Accepted Answer

Hey everyone. Let's take a look at this question together, photosynthetic bacteria such as green and purple sulfur bacteria. Use what as a source of protons and electrons and release what as a byproduct during photosynthesis. Okay let's start off by recalling what we've learned in the past about the green and purple sulfur bacteria as well as photosynthetic bacteria in general. So we know that the green and purple sulfur bacteria are one of the four major groups of photosynthetic bacteria and that they are photo trophic, meaning that they synthesize their own food during photosynthesis. Now we also know that photosynthetic bacteria are pro carry oats and so they don't undergo the same photosynthesis that you carry it undergo. So instead of that, so co two plus water to form glucose and oxygen, they undergo something called an oxygen IQ photo synthesis which uses something else as a electron donor because they don't produce or release carbon dioxide. Now, something that we've learned in the past about the sulfur bacteria is that they have something called hydrogen sulfide readily available to them in their habitat. So they use that hydrogen sulfide in the an oxygen oxygen IQ photosynthesis process and they release sulfur as a byproduct, meaning that the correct answer here is answer choice D because they use that H two S. As a source of protons and electrons and they release the sulfur as a byproduct during an oxygen IQ photosynthesis. I hope you found this video helpful. Thank you and goodbye

What do some photosynthetic bacteria use as a source of electrons instead of water? a. oxygen (O2) b. hydrogen sulfide (H2S) c. organic compounds (e.g., CH3COO−) d. nitrate (NO3-)

Watch next