The effect of nitrogen dosage on starch content and key enzyme activity in composing starch in kernels of spring maize was studied.
以不同品种春玉米为试验材料，研究氮肥施用量对春玉米子粒淀粉含量及淀粉合成关键酶活性的影响。
There are C3 and C4 cycle in the wheat cycle system and the key enzyme activity affects the first step reactions directly in photosynthetic carbon cycle.
在小麦碳循环体系中C3和C4途径共存，而这两个途径中的关键酶的活性的大小直接影响到光合碳循环的第一步反应。
Yield, nitrogen efficiency, characterization of nitrogen uptake and key enzyme activity of nitrogen assimilation were studied in wheat varieties with different nitrogen efficiencies.
以具有典型特征的不同氮效率小麦品种为材料，研究丰、缺氮条件下的籽粒产量、氮效率、氮素吸收特性和氮素吸收同化关键酶活性。
Blocking the activity of a protein known as RnpA stopped the recycling, indicating that Dunman's team had found a key enzyme.
抑制一种叫RnpA的蛋白质的活性可以终止循环，这表明Dunman的团队已经找到了关键的酶。
BACKGROUND: the choline acetyltransferase (ChAT) is the key synthetic enzyme for acetylcholine, and is the important symbol of the functional activity of the cholinergic system.
背景：胆碱乙酰化转移酶是乙酰胆碱合成的关键酶，是胆碱能神经系统功能活动的重要标志。
Methionine synthase is a key enzyme in homocysteine metabolism. The defects of methionine synthase activity could result in hyperhomocysteinemia and methionine auxotrophy.
甲硫氨酸合酶是同型半胱氨酸代谢的关键酶，其活性缺失可能会导致同型半胱氨酸蓄积及甲硫氨酸缺陷。
Extracellular enzyme activity plays an important role in the Marine environments, it is the key step in degradation and utilization of organic polymers by microorganism.
胞外酶活性在海洋环境中起着非常重要的作用，是微生物降解和利用有机复合物的关键。
The results indicated that phosphorylase and LDH, the key enzyme in glycolytic metabolism, are high positive in conductive tissue of heart, and the myocardium are a slightly highher activity.
结果显示，直接参与细胞无氧代谢的磷酸化酶和LDH在传导组织细胞内呈强阳性反应，心肌为弱阳性。
Sphingosine kinase (SPK) is a key enzyme catalyzing the formation of sphingosine 1 phosphate (S1P), which is a lipid messenger with strong angiogenic activity.
细胞内鞘氨醇激酶（SPK）是催化鞘氨醇生成1-磷酸鞘氨醇（S1P）的限速酶。
Sphingosine kinase (SPK) is a key enzyme catalyzing the formation of sphingosine 1 phosphate (S1P), which is a lipid messenger with strong angiogenic activity.
细胞内鞘氨醇激酶（SPK）是催化鞘氨醇生成1-磷酸鞘氨醇（S1P）的限速酶。
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