Exact(1)
But the fact that the oxidizing bacteria also have an internal source of sulfide from their symbionts means that they are not dependent on an external supply.
Similar(59)
Break it down by external sources vs. internal sources of happiness.
This result confirms the role of pyrite FeS2 (∼1 wt.% in argillite) as a source of sulfide.
However, in Brassica species there is also a more specific plant-based source of sulfides that is related to the formation of glucosinolate conversion products.
can be characterized by an acoustic source pressure ps and internal source impedance Zs, analogous to the open-circuit voltage and internal impedance of an electrical source.
6. Starbucks internal source.
The source of hydrogen sulfide gas is the volcano itself.
For these organisms, the source of hydrogen sulfide is unclear, although it may be derived from anaerobic sulfur disproportionation.
Comparison of the isotopic composition of sulfate and sulfide from the lower anoxic water layer during the DS meromictic stage, before the 1978 overturn (Steinhorn, 1985), pointed to bacterial sulfate reduction as the source of the sulfide because this microbially mediated process selects for S over S (Nissenbaum & Kaplan, 1976).
For example, previous research at the East Pacific Rise (EPR) (9°50'N) has demonstrated that macrofaunal organisms (e.g, tubeworms) were located near direct sources of free sulfide (H2S/HS-) because they hosted sulfide-reliant symbiotic microorganisms [3].
The sources of hydrogen sulfide may be multiple, including the bacterial flora [ 25], as well as endogenous sulfide-generating enzymes that exist in many cells and tissues of the human body [ 26].
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