Sulfur

Hello. I am in desperate need of some advice regarding an experiment. I am testing the purple non-sulfur bacteria Rhodospirillum rubrum. My aim is to compare the rate of growth of the bacteria using light and fermentation for energy metabolism. But, should I be testing just ...

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... you don't know what "valency" means, because hydrogen does not have a lot of valency! It can only bond to one other atom. Oxygen and sulfur can each bond to two other atoms, nitrogen to three, and carbon to four. These numbers all have to do with the number of valence electrons each ...

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...You attend American School, don't you. :)

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What exactly are the differences and similarities between Eukaryotic Photosynthesis in Green Plants and Prokaryotic Photosynthetic Sulfur Bacteria???

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... that imply that protease breaks down lipase by breaking down the peptide bonds between its amino acids? Or do the other bonds (ionic, hydrogen, sulfur bridges, etc.) within the lipase molecule prevent this from happening? I would appreciate an explanation. Thanks in advance!

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