Hy hypothesizes that in plants H2O is split, with the Hydrogen
becoming incorporated into sugar and the O2 released as
- In the 1950s, scientists confirmed van Biels’ hypothesis by using a
heavy isotope of oxygen, O to follow the fate of oxygen atoms during
Photosynthesis is a redox process, as is cellular respiration
- Photosynthesis is a redox (oxidation-reduction) process, just as
cellular respiration is.
CO2 becomes reduced to sugar as electrons, along with H
ions (H ) from water, are added to it.