cytomembranes

简明释义

英[ˌsaɪtəʊˈmembreɪn]美[ˌsaɪtəˈmembreɪn]

n. [细胞] 细胞膜

英英释义

单词用法

同义词

反义词

例句

1.These materials are virtually absent from other cytomembranes.

这些物质在其它的细胞膜中实际上是不存在的。

2.These materials are virtually absent from other cytomembranes.

这些物质在其它的细胞膜中实际上是不存在的。

3.The integrity of cytomembranes 细胞膜 is crucial for maintaining cellular homeostasis.

细胞膜的完整性对于维持细胞内环境的稳定至关重要。

4.During cell division, the cytomembranes 细胞膜 play a key role in separating the daughter cells.

在细胞分裂过程中，细胞膜在分隔子细胞中发挥了关键作用。

5.Certain toxins can disrupt cytomembranes 细胞膜, leading to cell death.

某些毒素可以破坏细胞膜，导致细胞死亡。

6.Researchers are studying how cytomembranes 细胞膜 interact with proteins to facilitate transport.

研究人员正在研究细胞膜如何与蛋白质相互作用以促进物质运输。

7.The fluidity of cytomembranes 细胞膜 affects the movement of molecules in and out of the cell.

细胞膜的流动性影响分子进出细胞的运动。

作文

The study of cellular structures has always fascinated scientists, particularly when it comes to understanding the fundamental building blocks of life. One of the most critical components in this regard is the cytomembranes, which serve as the boundary between the internal environment of a cell and the external world. The cytomembranes (细胞膜) are not just passive barriers; they play an active role in maintaining homeostasis within the cell by regulating what enters and exits. This selective permeability is vital for the survival of the cell, allowing essential nutrients to enter while keeping harmful substances out. The structure of cytomembranes is primarily composed of a phospholipid bilayer, which provides fluidity and flexibility. Embedded within this bilayer are various proteins that perform specific functions, such as transport, signaling, and structural support. These proteins can be integral or peripheral, each contributing to the overall functionality of the cytomembranes. For instance, transport proteins facilitate the movement of ions and molecules across the membrane, while receptor proteins are crucial for cell communication. Moreover, the cytomembranes are involved in various cellular processes, including endocytosis and exocytosis. Endocytosis allows the cell to engulf materials from the outside environment, forming vesicles that can be transported within the cell. Conversely, exocytosis is the process by which materials are expelled from the cell, ensuring that waste products are removed efficiently. These processes highlight the dynamic nature of cytomembranes and their importance in cellular function. In addition to their structural and functional roles, cytomembranes are also integral to cell signaling. They contain receptors that can detect external signals, such as hormones or nutrients, triggering a cascade of intracellular responses. This ability to communicate with the external environment is essential for maintaining cellular functions and responding to changes in the surroundings. Understanding the role of cytomembranes extends beyond basic biology; it has significant implications in fields such as medicine and biotechnology. For example, many drugs are designed to target specific proteins within the cytomembranes, enhancing their effectiveness in treating diseases. Additionally, research into the properties of cytomembranes can lead to advancements in drug delivery systems, making treatments more efficient and less invasive. In conclusion, the cytomembranes (细胞膜) are essential components of cells that play a multifaceted role in maintaining cellular integrity and function. From their structural properties to their involvement in transport and signaling, cytomembranes are vital for the life of the cell. As we continue to explore the complexities of cellular biology, the significance of cytomembranes will undoubtedly remain a focal point in our understanding of life itself.