cell membrane
发音：英 [?sel ?membr?] 美 [?sel ?m?mb?r]
基础释义：细胞膜是细胞生物膜的一种，它包围在细胞内，将细胞与周围环境分隔开。它包括内外两层，外层为连续的脂质双分子层，内层包含多种水溶性或脂溶性的物质。细胞膜的主要功能是控制物质进出细胞，同时与细胞表面的受体和酶一起参与细胞内的信号传导。
英语范文：Cell membrane is an important part of cell biology. It plays a crucial role in maintaining the integrity of the cell and controlling the entry and exit of substances into and out of the cell. Without a properly functioning cell membrane, cells would be unable to function properly and the body would be unable to maintain homeostasis. Understanding the structure and function of the cell membrane is essential for understanding how cells work and how diseases develop.
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Cell Membrane
Cell membrane is the outermost layer of a cell, which plays an essential role in maintaining the integrity of the cell and regulating its functions. It acts as a barrier against external substances and maintains the correct balance of ions and molecules within the cell.
The cell membrane is composed of phospholipids, proteins, and other components, forming a fluid but structured surface that allows for the passage of substances. It regulates the entry and exit of molecules from the cell, and also plays a role in signaling between cells.
In biology, the cell membrane is crucial for cellular life and function. It controls what enters and leaves the cell, regulates cell volume, and maintains the correct chemical environment for cellular processes to occur. Understanding the structure and function of the cell membrane is essential for understanding cellular biology.
In summary, the cell membrane is a vital component of cells that plays a crucial role in maintaining cellular integrity and function. Its structure and function are essential for understanding cellular biology.
Cell membrane
The cell membrane is the boundary that separates the inside of the cell from the outside environment. It acts as a barrier to protect the cell from external factors such as toxins and bacteria. It also plays a crucial role in transporting substances into and out of the cell.
The cell membrane is made up of phospholipids, proteins, and other components. It forms a phospholipid bilayer, which acts as a semi-permeable barrier, allowing certain substances to pass through while keeping out most foreign substances. Proteins on the membrane act as receptors that bind to specific substances, initiating a signal transduction process that results in a cellular response.
Cell membrane function is essential for maintaining cellular health and survival. It ensures that essential nutrients are brought into the cell and that waste products are removed. It also regulates cellular communication with other cells and the surrounding environment. When the cell membrane is damaged or dysfunctional, it can lead to various diseases and disorders.
In conclusion, the cell membrane is a crucial component of the cell that plays a vital role in maintaining cellular health and survival. Understanding its structure and function is essential for understanding how cells work and for developing effective treatments for diseases that affect cellular function.
