细胞膜主要是由磷脂构成的富有弹性的半透性膜,膜厚7～8nm,对于动物细胞来说,其膜外侧与外界环境相接触。其主要功能是选择性地交换物质,吸收营养物质,排出代谢废物,分泌与运输蛋白质。
A)Plasma membrane/ Cell surface membrane细胞膜 作用于细胞和其外界环境之间,主要功能为允许部分物质进出整个细胞--Selectively permeable B)Cell wall细胞壁 --包围在细胞膜外 --植物细胞壁由纤维素cellulose构成,因此非常strong Controls 控制 A)Nucleus细胞核 --由带着核孔Nuclear pores的double-layered membrane(Nu...
百度试题 结果1 题目cellmembrane(细胞膜) 相关知识点: 试题来源: 解析 细胞膜是细胞膜结构的总称,它包括细胞外层的膜和存在于细胞质中的膜,有时也特指细胞质膜。
首先说起cell structure, 不得不背的基础知识点就是各个细胞器的名字功能大小形态啦 ■Nucleus 细胞核, 作为细胞内最大的一个结构,肩负着调控细胞代谢与遗传的重任 Keywords:nucleolus,nuclear pores,genetical information, double membrane… ■Endoplasmic reticulum(ER) 内质网,通常与细胞核项链,是细胞内蛋白质,脂类...
细胞膜(Cell Membrane - Cell Size Structure)TheCellMembrane ASpecialPlace!(PartA)WhyAreCellsSoSmall?•Canyouseeacell?No,cellsaremicroscopic.Why?Ithastodowiththecellmembrane.TheCellMembraneisaDoorwayintotheCell •Moleculesmoveinandoutofthecellthroughthecellmembrane.•Themembrane(orcellsurface)hasto...
Cell structure and function … 分类:prokaryotic(bacteria )、eukaryotic.(其实还有一个新发现的类别以前被认为是属于prokaryotic,现在更正为与上面两种并列…名字没记住…) 从inner side to the outside大概是: 1.nucleus:nuclear membrane 包围着nucleolus、ribosome。(ribosome是数量最多的organelle、第一次加工protein...
细胞膜的结构和功能(Structure and function of cell membrane) In junior high school, we learned about the cellular structures of plants and animals. Now, what are the different structures of plant cells and animal cells?. ) now we have to study the structure and function of cells, cell struct...
CELL STRUCTURE (細胞的結構) A. Terms 1. Cell - the basic unit of structure and function in living organisms. 2. Cytology - the study of cells, especially by microscopy. 3. Light microscope 4. Electron microscope Cell Structure Cell wall (細胞壁) Cell membrane (細胞膜) Protoplast (原生質)...
The cell membrane is a thin, semi-permeable barrier that surrounds and encloses the contents of a cell. It supports and helps maintain a cell's shape.
Cell Membrane Structure The cell membrane consists of a double-layered structure (sometimes called the "fluid mosaic model") composed mainly of phospholipids. One of these layers faces the interior of the cell, or cytoplasm, while the other faces the external environment. The outward- and inward...