A. Fix nitrogen in the air B. Decompose organic matter C. photosynthesis D. Parasitism 相关知识点: 试题来源: 解析 A。固氮细菌的主要作用是将空气中的氮气固定。分解有机物不是固氮细菌的主要作用;光合作用不是固氮细菌的作用;寄生不是固氮细菌的作用。反馈...
Nitrogen is an essential component that is required by all the living organisms for proper growth and reproduction. Nitrogen is present in several inorganic compounds in living organisms like proteins, enzymes, amino acids, and nucleic acids.
Molecular approaches have provided a way to examine both of these issues: what is the distribution of nitrogen fixing microorganisms in the marine environment, and what are the molecular and biochemical features that determine the ecological... ...
Nitrogen Uses and Properties - Nitrogen is a diatomic gas with atomic number 7 and symbol N. Know the nitrogen atomic number, the atomic mass of nitrogen and atomic weight of nitrogen. Explore the Uses of Nitrogen.
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nitrogen fixationnitrogenaseBiological nitrogen (N 2 ) fixation is one of the main sources of available N for pristine ecosystems such as subarctic and arctic tundra. Although this has been acknowledged more than a decade ago, few attempts have been undertaken to identify the foremost driver of N...
What is a Pulse? Pulses are edible seeds from the legume family including beans, peas, chickpeas and lentils. They are very high in protein and fibre, and low in fat. Pulses are nitrogen-fixing crops that improve the environmental sustainability of cropping systems. Other foods in the legume...
The nitrogen cycle is the system by which nitrogen is converted into different chemical forms, some usable to humans and animals and some not, as it circulates among the atmosphere, the land and the oceans.
Some of the other species of genus Clostridium capable ofnitrogen fixationinclude: C. beijerinkii C. acebutylicum *Free-living Clostridium species capable of fixing nitrogen have the nif gene. *Apart from soil and water (freshwater sediments), free-living Clostridium species can also be found in...
aNitrogen-Fixing Symbioses Nitrogen-Fixing共生[translate] aWin is to fight 胜利是战斗[translate] aI love you, I incapable of action。 正在翻译,请等待...[translate] aRaptor 猛禽[translate] agap kila 正在翻译,请等待...[translate] aWhat can I do for you ? 我可以为您做什么?[translate]...