noun[mass noun] Biology
The synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight. Compare with photosynthesis.
- In the darkness at these depths, chemosynthesis takes the place of photosynthesis - the trapping of energy in sunlight by plants.
- It turned out that at the base of the food chain were bacteria that nourished themselves through a process of chemosynthesis.
- These so-called chemoautotrophs use the stored energy of certain chemicals [usually sulfides such as hydrogen sulfide or iron sulfide (FeS 2)] to drive chemosynthesis.
- Example sentences
- However, mussels from different sites sometimes responded differently to the same environment, suggesting stock-related effects also play a role in the spatial variation observed in the physiology of chemosynthetic fauna.
- Thus, the base of the deep-sea ecosystem's food chain may comprise both chemosynthetic and, probably in small proportion, photosynthetic bacteria.
- Scientists have identified over 300 species of life, including fish, tubeworms, clams, and chemosynthetic bacteria living around these vents.
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