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In enzymology, beta-carotene 15,15'-dioxygenase, ( EC 1.13.11.63) is an enzyme with systematic name beta-carotene:oxygen 15,15'-dioxygenase (bond-cleaving). [5] [6] In human it is encoded by the BCO1 gene. This enzyme catalyses the following chemical reaction. This is a cleavage reaction which cleaves β-carotene, utilizes molecular oxygen, is ...
Microsoft Bing, commonly referred to as Bing, is a search engine owned and operated by Microsoft. The service traces its roots back to Microsoft's earlier search engines, including MSN Search, Windows Live Search, and Live Search. Bing offers a broad spectrum of search services, encompassing web, video, image, and map search products, all ...
Free neutron decay. radiation, the emission of a fast electron from the nucleus (the accompanying antineutrino is omitted). In the Rutherford model for the nucleus, red spheres were protons with positive charge and blue spheres were protons tightly bound to an electron with no net charge . : The inset shows beta decay of a free neutron as it is ...
For the family of Mac operating systems, see Mac operating systems. For the Ugandan school nicknamed "Macos", see Makerere College School. macOS, originally Mac OS X, previously shortened as OS X, is an operating system developed and marketed by Apple since 2001.
The Nintendo 64[ a] ( N64) is a home video game console developed and marketed by Nintendo. It was released in Japan on June 23, 1996, in North America on September 29, 1996, and in Europe and Australia on March 1, 1997. The successor to the Super Nintendo Entertainment System, it was the last major home console to use cartridges as its primary ...
The usage share of an operating system is the percentage of computers running that operating system (OS). These statistics are estimates as wide scale OS usage data is difficult to obtain and measure. Reliable primary sources are limited and data collection methodology is not formally agreed. Currently devices connected to the internet allow ...
Beta-lactamase provides antibiotic resistance by breaking the antibiotics ' structure. These antibiotics all have a common element in their molecular structure: a four-atom ring known as a beta-lactam (β-lactam) ring. Through hydrolysis, the enzyme lactamase breaks the β-lactam ring open, deactivating the molecule's antibacterial properties.
It is a non-systemic and non-volatile insecticide that acts by contact and ingestion, used in agriculture and in pest control products. Exposure to sunlight, water and oxygen will accelerate its decomposition. Cypermethrin is highly toxic to fish, bees and aquatic insects, according to the National Pesticides Telecommunications Network (NPTN).