Answer :
Final answer:
Rubisco is the most common enzyme on Earth, vital for the Calvin Cycle in photosynthesis. It facilitates the conversion of carbon dioxide into G3P, which is essential for the synthesis of glucose. Its abundance and importance in the biosphere underscore its pivotal role in linking inorganic and organic carbon.
Explanation:
The Most Common Enzyme on Earth
The most common enzyme on Earth is Rubisco, which stands for ribulose-1,5-bisphosphate carboxylase/oxygenase. It plays a crucial role in the Calvin Cycle, which is a fundamental part of photosynthesis in plants, algae, and some bacteria.
During the Calvin Cycle, Rubisco helps convert carbon dioxide from the atmosphere into organic molecules. This process leads to the production of glyceraldehyde-3-phosphate (G3P), a three-carbon sugar that plants can use to create glucose and other carbohydrates.
Rubisco is unique because it is not only the most abundant protein on Earth but also serves as a key link between the inorganic carbon in the atmosphere and the organic compounds that make up the biomass of living organisms.
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