一碳单位是指只含一个碳原子的有机基团,这些基团通常由其载体携带参加代谢反应。这些含一个碳原子的基团称为一碳基团(one carbon unit)或一碳单位(C1 unit或one carbon unit)。有关一碳单位生成和转移的代谢称为一碳单位代谢。
这样的火星环境也许包含了一些基本的生命要素——包括水,有机碳和维持微生物新陈代谢的能量源。
Such an environment would have to contain the basic ingredients of life-including water, organic carbon and a source of energy to sustain the microbes' metabolism.
这样的火星环境也许包含了一些基本的生命要素——包括水,有机碳和维持微生物新陈代谢的能量源。
Such an environment would have to contain the basic ingredients of life — including water, organic carbon and a source of energy to sustain the microbes' metabolism.
烟草是中国一种重要的经济作物,而氮是植物必需的矿质养分,研究烟草碳氮代谢规律,对指导烟草的生产具有重要的作用。
Tobacco is an important economic crop, and nitrogen is essential mineral element. Studies on carbon and nitrogenous metabolism of tobacco have important action on tobacco production.
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