Simple diffusion和facilitated diffusion有哪些异同点?相关知识点: 试题来源: 解析 单纯扩散和易化扩散的异同点: 都是将较小的分子和离子顺浓度差(不需要另外供能)的跨膜转运。单纯扩散与易化扩散的不同点:①单纯扩散的物质是脂溶性的,易化扩散的物质是非脂溶性的;②单纯扩散遵循物理学规律,例如扩散速度除与浓度差...
简单扩散(simple diffusion):无膜载体参与;不消耗能;运输速率与膜两侧浓度成正比,还与他们在水相与油相中的分配系数、电离度、分子大小等因素有关。(疏水的小分子与不带电荷的小极性分子) 协助扩散(facilitated diffusion):转运蛋白介导的,顺梯度转运的过程。 特点: 不消耗能 依被运输物质顺着浓度...
1、单纯扩散(simple diffusion or passive diffusion) 被输送的物质,靠细胞内外浓度为动力,以透析或扩散 的形式从高浓度区向低浓度区的扩散。 特点: ①扩散是非特异性的营养物质吸收方式:如营养物质通过细 胞膜中的含水小孔,由高浓度的胞外环境向低浓度的胞内扩 散; 第四节 营养物质进入细胞的方式 ②在扩散过...
百度试题 结果1 题目人体内O2、CO2和NH3进出细胞膜是通过A. simple diffusion B. facilitated diffusion C. active transport D. endocytosis E. exocytosis 相关知识点: 试题来源: 解析 A 反馈 收藏
Simple diffusionFacilitated diffusion MechanismMolecules move directly across the membrane without the aid of a carrier proteinMovement occurs passively down a concentration gradient, however, the molecules require the help ofcarrier proteinsto allow them to cross the lipid bilayer ...
The cellular influx of LCFA occurs in the mechanism of passive diffusion through fenestrations in sinusoidal endothelium, and is due to caveolae system which participates in the endocytosis of macromolecules. The dynamic character of fenestration and their changes caused by the application of a ...
外源化学毒物经胃肠道吸收的主要方式是()A.filtrationB.facilitated diffusionC.simple diffusionD.phagocytos
comparison of active transport simple diffusion and facilitated diffusion,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360
In the process of neural regeneration after brain injury, a suitable physical framework of biomaterials is required to provide a physical matrix for cell growth, axonal regeneration, and neurite outgrowth and maintain a homeostatic microenvironment by allowing diffusion of nutrients and metabolites and ot...
cell debris was harvested via centrifugation at 7000 rpm for 5 min. The cell free supernatant was kept at −20 °C till being used in assessment of siderophore activity in further experiments through well-cut diffusion test as mentioned above usingE. amylovorastrain EGY1 DSM 101800 as an ...