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2. Photosynthesis - Wikipedia

   en.wikipedia.org/wiki/Photosynthesis

   Photosynthesis and cellular respiration are distinct processes, as they take place through different sequences of chemical reactions and in different cellular compartments (cellular respiration in mitochondria). [15] [16] The general equation for photosynthesis as first proposed by Cornelis van Niel is: [17]

3. PI curve - Wikipedia

   en.wikipedia.org/wiki/PI_Curve

   The PI (or photosynthesis-irradiance) curve is a graphical representation of the empirical relationship between solar irradiance and photosynthesis. A derivation of the Michaelis–Menten curve, it shows the generally positive correlation between light intensity and photosynthetic rate. It is a plot of photosynthetic rate as a function of light ...

4. Photosynthetic efficiency - Wikipedia

   en.wikipedia.org/wiki/Photosynthetic_efficiency

   The following is a breakdown of the energetics of the photosynthesis process from Photosynthesis by Hall and Rao: [6]. Starting with the solar spectrum falling on a leaf, 47% lost due to photons outside the 400–700 nm active range (chlorophyll uses photons between 400 and 700 nm, extracting the energy of one 700 nm photon from each one)

5. Fractionation of carbon isotopes in oxygenic photosynthesis

   en.wikipedia.org/wiki/Fractionation_of_carbon...

   Carbon on Earth naturally occurs in two stable isotopes, with 98.9% in the form of 12 C and 1.1% in 13 C. [1] [8] The ratio between these isotopes varies in biological organisms due to metabolic processes that selectively use one carbon isotope over the other, or "fractionate" carbon through kinetic or thermodynamic effects. [1]

6. C3 carbon fixation - Wikipedia

   en.wikipedia.org/wiki/C3_carbon_fixation

   Calvin–Benson cycle. C 3 carbon fixation is the most common of three metabolic pathways for carbon fixation in photosynthesis, the other two being C 4 and CAM.This process converts carbon dioxide and ribulose bisphosphate (RuBP, a 5-carbon sugar) into two molecules of 3-phosphoglycerate through the following reaction:

7. US lawmakers seek to halt weapons sales to UAE, citing Sudan

   www.aol.com/news/us-lawmakers-seek-halt-weapons...

   War erupted in April 2023 between the Sudanese army and the RSF over a transition to free elections, with tens of thousands of people reported dead. The United Nations has said nearly 25 million ...