The functional group in ethanol is _. A. -OH B. -COOH C. -CHO D. -NH₂ 相关知识点: 试题来源: 解析 A。解析:乙醇的结构简式为C₂H₅OH,其中的官能团是羟基 -OH。选项B -COOH是羧基,存在于羧酸中,乙醇不是羧酸。选项C -CHO是醛基,乙醇没有醛基结构。选项D -NH₂是氨基,与乙...
Ethyl: the ethyl group, CH3CH2−, is bonded to a hydroxyl group to form ethanol (ethyl alcohol), CH3CH2OH. The reaction of ethanol with urea creates ethyl carbamate, which can occur naturally in fermented foods and alcoholic beverages (bread, soy sauce, yoghurt, beer, fruit brandies) when...
摘要: Objective: The aim of the study was to find out the phytochemical constituents, and to evaluate the functional group and elemental analysis of ethanol leaf extract of Ipomoea obscura (L.).关键词: neutrophil elastase alpha(1)-antitrypsin heparin bronchiectasis sputum ...
In this study, we performed a systematic analysis of the functional group(s) in adenine that are required for the second step of the splicing reaction. The replacement of the 3′-splice-site adenine by a modified base does not significantly affect the first step of the splicing reaction, whi...
of immunohistochemical and electron microscopy studies to group enteric neurons based on their distinct neurochemistry, projection patterns, and ultrastructure [16,17,18,19,20,21,22,23,24,25,26,27,28,29]. These were further correlated with their electrophysiological and functional properties [30,31...
In the RSU group, we found PRF levels have a statistically significant effect on the neuron firing rates (Kruskal–Wallis chi-squared = 14.45,p = 0.006), indicating that the RSUs respond to different tFUS conditions with different firing rates (Fig.4b). More specifically, the spiking...
Transplantation of pancreatic islet cells derived from human pluripotent stem cells is a promising treatment for diabetes. Despite progress in the generation of stem-cell-derived islets (SC-islets), no detailed characterization of their functional properties has been conducted. Here, we generated functi...
2.)Regarding carboxamide- As always, we look for the longest chain that contains the functional group, but in this case the longest chain that contains the functional group of amide is the single carbonyl carbon of the amide?That is why we call it carboxamide? 3.)This question refers to ...
(PBS) containing 2.5% glutaraldehyde at 4 °C for 10 min. After washing in 0.1 M PBS, the sample was incubated in PBS containing 1% OsO4and 1.5% potassium ferrocyanide for two hours. The cells were dehydrated by incubating through a concentration gradient of ethanol increasing up to...
In addition, silane-based [56,57], pyrrole-based [58,59], and p-aminothiophenol [60,61] were used owing to their benefits and different functionalities. In general, a monomer consists of two kinds of units, the recognition unit such as the vinyl group and the polymerizable unit such as ...