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Cornelis Bernardus van Niel (also known as Kees van Niel; November 4, 1897 – March 10, 1985) was a Dutch-American microbiologist. He introduced the study of general microbiology to the United States and made key discoveries explaining the chemistry of photosynthesis .
Cornelis Van Niel proposed in 1931 that photosynthesis is a case of general mechanism where a photon of light is used to photo decompose a hydrogen donor and the hydrogen being used to reduce CO 2. [11] Then in 1939, Robin Hill demonstrated that isolated chloroplasts would make oxygen, but not fix CO
Cornelis Van Niel made key discoveries explaining the chemistry of photosynthesis. By studying purple sulfur bacteria and green bacteria, he was the first to demonstrate that photosynthesis is a light-dependent redox reaction in which hydrogen reduces (donates its atoms as electrons and protons to) carbon dioxide.
In 1931, Cornelis van Niel made key discoveries explaining the chemistry of photosynthesis. By studying purple sulfur bacteria and green sulfur bacteria, he was the first scientist to demonstrate that photosynthesis is a light-dependent redox reaction, in which hydrogen reduces carbon dioxide. [35] [36] Expressed as: 2 H 2 A + CO 2 → 2A + CH ...
They were discovered by C. B. van Niel in 1932. [1] They are related to chlorophylls, which are the primary pigments in plants, algae, and cyanobacteria. Organisms that contain bacteriochlorophyll conduct photosynthesis to sustain their energy requirements, but the process is anoxygenic and does not produce oxygen as a byproduct.
(van Niel, 1944) Imhoff et al., 1984 Rhodobacter sphaeroides is a kind of purple bacterium ; a group of bacteria that can obtain energy through photosynthesis . Its best growth conditions are anaerobic phototrophy ( photoheterotrophic and photoautotrophic ) and aerobic chemoheterotrophy in the absence of light. [ 1 ]
Otto Cornelis Adriaan van Lidth de Jeude, ... Cornelius Van Niel, Dutch chemist who first demonstrated that photosynthesis is a light-dependent redox reaction; O
Van Niel was legendary in his knowledge of microorganism biology, and this experience afforded Lascelles a great deal, especially the ability to study more exotic bacterial organisms. She worked at dispelling the previously-thought rule that anaerobes do not have cytochromes , and the provision of a soluble β-hydroxybutyrate dehydrogenase ...