Process
Giant tube worms use bacteria in their trophosome to react hydrogen sulfide with oxygen as a source of energy.
Some reactions produce sulfur, such as:
Hydrogen sulfide chemosynthesis: CO2 + O2 + 4H2S → CH2O + 4S + 3H2O
(CH2O is used to mean carbohydrate, not formaldehyde.)
Instead of releasing oxygen gas as in photosynthesis, solid globules of sulfur are produced. In bacteria that can do this, such as purple sulfur bacteria, yellow globules of sulfur are present and visible in the cytoplasm.
Read more about this topic: Chemosynthesis
Famous quotes containing the word process:
“It is part of the nature of consciousness, of how the mental apparatus works, that free reason is only a very occasional function of people’s “thinking” and that much of the process is made of reactions as standardized as those of the keys on a typewriter.”
—John Dos Passos (1896–1970)
“There was only one catch and that was Catch-22, which specified that a concern for one’s own safety in the face of dangers that were real and immediate was the process of a rational mind.... Orr would be crazy to fly more missions and sane if he didn’t, but if he was sane he had to fly them. If he flew them he was crazy and didn’t have to; but if he didn’t want to he was sane and had to.”
—Joseph Heller (b. 1923)
“At the heart of the educational process lies the child. No advances in policy, no acquisition of new equipment have their desired effect unless they are in harmony with the child, unless they are fundamentally acceptable to him.”
—Central Advisory Council for Education. Children and Their Primary Schools (Plowden Report)