"Nitrogenase" Natural Recordings by Native Speakers
Nitrogenase is an enzyme complex found in certain microorganisms, such as Clostridium pasteurianum and Azotobacter vinelandii, that plays a crucial role in the nitrogen cycle. It catalyzes the conversion of atmospheric nitrogen (N2) into ammonia (NH3), which is then used by plants and animals as a nutrient.
A more detailed explanation of nitrogenase's function involves its ability to reduce the triple bond between the two nitrogen atoms in N2, releasing energy and forming a two-electron bond, allowing the complex to bind to the enzyme and stabilize the transition state. Additionally, the process involves the step-wise addition of electrons and protons to form ammonia, which is then released from the enzyme as a byproduct of the nitrogenase reaction.
Nitrogenase is responsible for fixing approximately 180 million tons of atmospheric nitrogen per year, contributing significantly to the global nitrogen cycle.
Nitrobacter is a genus of Gram-negative, aerobic bacteria that are known for their ability to oxidize nitrite (NO2-) to nitrate (NO3-). They play a crucial role in the nitrogen cycle, helping to transform nitrogen-based compounds in the environment. Nitrobacter species are typically found in soil, aquatic ecosystems, and wastewater treatment plants, where they contribute to the degradation of organic matter and the removal of excess nitrogen from the environment.
Nitrobacteriaceae is a family of bacteria that are capable of oxidizing ammonia to nitrite, playing a crucial role in the nitrogen cycle. They are typically gram-negative, non-sporulating, and found in a variety of environments, including soil, water, and the guts of certain insects and animals.
Nitrobenzene is a toxic, pale yellow liquid organic compound with a strong odor, used as a solvent and an intermediate in the production of dyes, antioxidants, and other chemicals.
Nitrogenize is a verb that means to convert or change something into a nitrogen-containing compound, or to process or treat something using nitrogen. It is often used in scientific and technical contexts, particularly in chemistry and biology. For example, a fertilizer manufacturer might nitrogenize their products to make them more effective at promoting plant growth.
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Nitroglycerine is a highly explosive liquid compound, first discovered in 1847. It is a major component of dynamite, a type of blasting gelatin used in mining and other explosions. Nitroglycerine is also used in the treatment of angina pectoris, a heart condition, as it helps to relax blood vessels and improve blood flow to the heart. It is administered orally or injected into the muscle and is effective in reducing chest pain associated with angina.