百度试题 结果1 题目39 Which formul a represents a molecule with the most polar bond?(4)(1) CO (3) HI(2) NO (4) HCl 相关知识点: 试题来源: 解析 (4) 反馈 收藏
19 Which formula represents a polar molecule?A:Cl_2B:HI 相关知识点: 试题来源: 解析 B: HI 该题考查分子极性。分子极性取决于原子电负性差异和分子结构。Cl_2 中两个氯原子电负性相同,分子结构为线性,电荷分布均匀,是非极性分子。HI 中碘原子电负性大于氢原子,导致分子中电荷分布不均匀,形成极性分子。因此,...
Which structures below represent the diastereomers of the compound in the picture? Indicate whether each of the following pairs represent structural isomers or the same molecule: Which is not true for structural isomers? a) They have the same molar mass. b...
ARepresentative image of dissected guts from WT andPex2−/−pups at postnatal day 0. The bar graph on the right represents the quantification in cm of the length of the intestinal tract in WT andPex2−/−pups at day 0.BImages of hematoxylin and eosin staining of small intestine sec...
While we and others have probed in some detail the molecular basis by which the GPCR rhodopsin activates its G protein signaling partner transducin, and thus have a good picture of how this key step in phototransduction occurs, less is known from a structural and mechanistic perspective regarding...
结果1 题目 4 The diagram represents an enzyme and four molecules, A, B, C and D.Which molecule is the substrate of this enzyme?A molecule A molecule B molecule C Senzyme molecule D 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
aThis important small molecule possesses a relatively wide array of biological activities that may underlie its ability to reduce the mortality associated with various cancer types.In particular, several studies have indicated that inhibition of metastasis by genistein represents an important mechanism by ...
A second interpretation suggests these two circumstances might be complementary and implies that EGFR ligands are necessary for EGFR to regulate radial migration but tangential migration is sustained by signaling molecule(s) other than HB-EGF in the postnatal brain with hydrocephalus. This latter view ...
RFH resembles the shape of a tRNA molecule more closely than RF1 or RF2 (Fig. 1C), mostly due to the lack of domain 1. The close resemblance to the shape of a tRNA molecule further supports our hypothesis, that RFH has its natural active site in the ribosomal A-site, as other RFs...
Nuclear fusion power plant having a liquid reactor core of molten glass that is made laseractive and functions as a tritium breeding blanket which is capable of acousticly compressing/confining fuel so that it radiates and triggers outgoing laser cascades that will reflect from the blast chamber's...