In hydrothermal vent ecosystems, every organism that produces nutrients without sunlight utilizes chemosynthetic bacteria. All chemosynthetic bacteria active at these vents generate carbohydrates by metabolizing either dissolved sulfides or methane, and any chemosynthetic bacterium that metabolizes dissolved sulfides inevitably yields sulfate byproducts. Giant tubeworms thriving at hydrothermal vents depend exclusively on symbiotic bacteria that metabolize dissolved sulfides.
If the statements above are true, which one of the following must also be true?
- AAny bacterium in a hydrothermal vent ecosystem that yields sulfate byproducts is harbored symbiotically by giant tubeworms.
- BMethane is never metabolized by any living organism outside of hydrothermal vent ecosystems.
- The symbiotic bacteria utilized by giant tubeworms at hydrothermal vents yield sulfate byproducts.Cevap
- DProducing sulfate byproducts is sufficient to guarantee that an organism produces nutrients without relying on sunlight.
- EGiant tubeworms produce more carbohydrates per gram of tissue than do organisms hosting methane-metabolizing bacteria.
Cevap
The symbiotic bacteria utilized by giant tubeworms at hydrothermal vents yield sulfate byproducts.
The correct response strictly follows by combining two stated premises: giant tubeworms depend on bacteria that metabolize dissolved sulfides, and any chemosynthetic bacterium metabolizing dissolved sulfides inevitably produces sulfate byproducts.
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Deductive Conditional Synthesis and Quantifier Tracking
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