## Photosynthesis

What is the approx. efficiency of the conversion of light energy to chemical energy in photosynthesis?

a. 100%
b. 95%
c. 15%
d. 1%

I doubt that it is 100%. Is it 15%? I did a search, and I read that the efficiency is 13% for CO2 fixation using solar radiation. I don't know if this is reasonable.

Thanks for any replies.
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 Quote by Soaring Crane What is the approx. efficiency of the conversion of light energy to chemical energy in photosynthesis? a. 100% b. 95% c. 15% d. 1% I doubt that it is 100%. Is it 15%? I did a search, and I read that the efficiency is 13% for CO2 fixation using solar radiation. I don't know if this is reasonable. Thanks for any replies.
I haven't been on this topic for awhile so excuse me if I'm wrong. But aren't the pigments af light energy stored using adenosine tri-phosphate?(chemical energy)
 You mean, ATP? I think the light reactions (photophosphorylation) make ATP from ADP and P using solar energy.

## Photosynthesis

Going by generalization there is the "Rule of 10". Where roughly each trophic level consumes/converts energy at ~10% efficiency. I think the maximum efficiency is around 20% for levels, so my assumption would be the 15% solution.

100% should be a giveaway because no metabolic process is going to be perfectly efficient.

 Quote by Soaring Crane What is the approx. efficiency of the conversion of light energy to chemical energy in photosynthesis? a. 100% b. 95% c. 15% d. 1% I doubt that it is 100%. Is it 15%? I did a search, and I read that the efficiency is 13% for CO2 fixation using solar radiation. I don't know if this is reasonable. Thanks for any replies.