carbon fixation in photosynthesis


Carbon fixation is the process by which inorganic carbon is added to an organic molecule. Carbon atoms end up in you, and in other life forms, thanks to the second stage of photosynthesis, known as the Calvin cycle (or the light-independent reactions). The general principle of carbon fixation is that some cells under certain conditions can take inorganic carbon, CO 2 (also referred to as mineralized carbon), and reduce it to a usable cellular form. Most of us are aware that green plants can take up CO 2 and produce O 2 in a process known as photosynthesis. As it turns out, the atoms of carbon in your body were once part of carbon dioxide (\text {CO}_2 CO2) molecules in the air. Carbon fixation is a process found in photosynthesis in autotrophic plant s. It is when the three carbon dioxide molecule s taken in each time there is a turn in the Calvin cycle in the dark reactions of photosynthesis. These three carbon dioxide molecules undergo the chemical reactions in … Rates of microbial carbon fixation by photosynthetic mats is negatively and exponentially related with high temperature (69‐75 oC).