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Jean Senebier & Theodore de Saussure
Very soon after, more pieces of the puzzle were found by two chemists working in Geneva. Jean Senebier, a swiss pastor, found that "fixed air" (CO2) was taken up during photosynthesis, and Theodore de Saussure discovered that the other reactant necessary was water. The final contribution to the story came from a German surgeon, Julius Robert Mayer (right), who recognised that plants convert solar energy into chemical energy. He said:
“By enclosing plants in glass containers and weighing the plants and enclosed carbon dioxide before and after, de Saussure demonstrated that plants absorb carbon dioxide during photosynthesis”.
Results:
After weighing the plants he noticed that the mass of the plant and carbon dioxide did not account for the final mass of the plant.
Nicolas-Theodore de SAUSSURE - Lipid
1804:Nicholas Theodore de Saussure publishes experiments on photosynthesis,and described the balanced equation of the process.
Relation to photosynthesis: Saussure confirmed previous ideas and added the assimilation of water into the plant and the photosynthetic equation.
Theodor Engleman (1843–1909) was a German botanist who studied specifically where in a plant cell the photosynthesis takes place.
NICOLAS - THEODORE DE SAUSSURE
311
Background
Breakthrough in Photosynthesis
October 14, 1767-April 18, 1845[12]
Nicolas-Theodore de Saussure
-Mystery behind Photosynthesis is uncovered.
-The work of scientists Jean Senebier and Nicolas-Theodore de Saussure combine to create chemical equation for Photosynthesis.
-Research was based on basis of previous work done by scientists before.
[10]
Scientist's Gazette
Jean Senebier's Experiment
Nicolas-Theodore de Saussure's Experiment
What it meant for the study of Photosynthesis:
References:
Question:
What are the overall gas and nutrient consumptions needed for plants?
Hypothesis:
Since the final weight of the plant did not account for the weight of the water, Theodore hypothesized that there was another substance that the plant was absorbing that accounted for the final weight of the plant, that substance was atmospheric carbon dioxide.
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