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Items tagged with: photosynthesis

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#MolecularClock analysis shows #bacteria used oxygen long before widespread photosynthesis
phys.org/news/2025-04-molecula…

A geological timescale for bacterial #evolution and oxygen adaptation science.org/doi/10.1126/scienc…

"the earliest aerobic transition occurred in an ancestor of photosynthetic #cyanobacteria, indicating that the ability to utilize trace amounts of oxygen may have allowed the development of genes central to oxygenic #photosynthesis."

Molecular clock analysis shows bacteria used oxygen long before widespread photosynthesis

Microbial organisms dominate life on Earth, but tracing their early history and evolution is difficult because they rarely fossilize. Determining when exactly a particular group of microbes first appeared is especially hard.
Okinawa Institute of Science and Technology (Phys.org)
#Evolution #bacteria #cyanobacteria #photosynthesis #molecularclock

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#Sensors in #Science + #Tinkering 4 #Teachers. My new portable, bluetoothed, gas sensor modules, bringing biology, climate change & Air Quality into under served #school systems. My recent work has been developing #experientiallearning for #environmental #Education in #macedonia supported by UNICEF. Can be popped in a plastic bag & used to track rates of #photosynthesis outside in-situ. With a change of sensors we have used these to monitor airborne particle loads, and noxious gases.
#science #Education #school #tinkering #teachers #environmental #photosynthesis #macedonia #experientiallearning #sensors

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