membranes

简明释义

英[ˈmembreɪns]美[ˈmembren]

n. 细胞膜（membrane 的复数）；薄膜；膜皮

英英释义

单词用法

同义词

反义词

例句

1.Good separation of co-ions and counter ions cannot be achieved by a single type of the singly charged NF membranes.

采用单一的荷电纳滤膜是不能实现同名离子和反荷离子之间的高效分离的。

2.Such united atom approximations have been used in simulations of biological membranes.

这种联合原子近似已被用于生物膜的模拟。

3.The inner ear is composed of delicate membranes which bear dense patches of specialized cells called maculae.

内耳由脆弱的薄膜构成，它承载着密集的由被称作斑疹的特殊细胞构成的片。

4.The researchers think these may be able to work as proton-exchange membranes in their own right.

研究者们认为这些“完全的膜”其本身就具有交换质子的功能。

5.What drove the transition from such membranes to modern ones, which are based on the more complex phospholipids?

这种的简单膜结构转变成现代的基于磷脂的版本是由什么驱使的？

6.Membranous nephropathy.This kidney disorder is the result of thickening membranes within the glomeruli.

膜性肾病特征是肾小球基底膜(上左图——基膜)的增厚。

7.Biological membranes are primarily composed of lipids and proteins.

生物膜主要由脂质和蛋白质组成。

8.Certain diseases can affect the membranes of the lungs, leading to respiratory issues.

某些疾病可能影响肺部的膜，导致呼吸问题。

9.In the human body, membranes play a crucial role in separating different bodily fluids.

在人体中，膜在分隔不同体液方面起着至关重要的作用。

10.The cell's outer layer consists of multiple membranes that protect its internal components.

细胞的外层由多层膜组成，以保护其内部成分。

11.The process of osmosis involves water moving through membranes to balance concentrations.

渗透过程涉及水通过膜移动以平衡浓度。

作文

In the world of biology, the term membranes refers to the thin layers that separate different environments within living organisms. These structures play a crucial role in maintaining the integrity of cells and organelles, allowing them to function effectively. The most well-known type of membranes is the cell membrane, which surrounds every cell in our body. This semi-permeable barrier controls what enters and exits the cell, ensuring that essential nutrients can be absorbed while waste products are expelled. Without cell membranes, cells would not be able to maintain homeostasis, leading to dysfunction and ultimately death.Cell membranes are primarily composed of a phospholipid bilayer, which consists of two layers of phospholipids with hydrophilic (water-attracting) heads facing outward and hydrophobic (water-repelling) tails facing inward. This arrangement creates a flexible yet stable structure that allows for fluid movement within the membranes. Additionally, proteins embedded within the membranes serve various functions, including transport, signaling, and acting as enzymes. These proteins can facilitate the movement of substances across the membranes, a process vital for cellular communication and nutrient uptake.Apart from cell membranes, other types of membranes exist within organelles, such as the nuclear membrane, which encloses the nucleus, and the mitochondrial membranes, which are involved in energy production. Each type of membrane has unique properties and functions tailored to its specific role within the cell. For instance, the inner mitochondrial membrane is highly folded, forming structures known as cristae, which increase the surface area for biochemical reactions involved in ATP production.The study of membranes extends beyond biology into various fields, including medicine and biotechnology. Understanding how membranes work can lead to advancements in drug delivery systems, where medications are encapsulated in lipid-based membranes to improve their efficacy and reduce side effects. Moreover, research on artificial membranes has opened new avenues for developing synthetic organs and tissues, potentially addressing the shortage of donor organs for transplantation.In summary, membranes are fundamental components of biological systems, serving as barriers and facilitators of communication and transport. Their complex structures and functions highlight the intricate nature of life at the cellular level. As we continue to explore the roles of membranes in health and disease, we gain valuable insights that could revolutionize medical treatments and enhance our understanding of life's processes.

在生物学的世界中，术语membranes指的是分隔生物体内不同环境的薄层。这些结构在维持细胞和细胞器的完整性方面发挥着至关重要的作用，使它们能够有效地工作。最著名的membranes类型是细胞膜，包围着我们身体中的每个细胞。这个半透膜控制着进入和离开细胞的物质，确保必需的营养物质可以被吸收，同时废物被排出。如果没有细胞membranes，细胞将无法维持稳态，导致功能障碍，最终死亡。细胞membranes主要由磷脂双层组成，该双层由两层磷脂构成，亲水（吸水）头部朝外，疏水（拒水）尾部朝内。这种排列形成了一个灵活但稳定的结构，允许membranes内的流动。此外，嵌入membranes中的蛋白质具有多种功能，包括运输、信号传递和作为酶。这些蛋白质可以促进物质穿过membranes的运动，这一过程对细胞通信和营养物质的摄取至关重要。除了细胞membranes，其他类型的membranes也存在于细胞器中，例如核膜，它包围着细胞核，以及线粒体membranes，它们参与能量生产。每种类型的membranes具有独特的属性和功能，适应其在细胞中的特定角色。例如，内线粒体membranes高度折叠，形成称为嵴的结构，从而增加了进行ATP生产的生化反应的表面积。对membranes的研究超越了生物学，涉及医学和生物技术等多个领域。了解membranes的工作原理可以推动药物输送系统的发展，其中药物被封装在基于脂质的membranes中，以提高其疗效并减少副作用。此外，对人工membranes的研究开辟了开发合成器官和组织的新途径，可能解决器官移植供体短缺的问题。总之，membranes是生物系统的基本组成部分，充当屏障并促进通信和运输。它们复杂的结构和功能突显了细胞层面生命的错综复杂。随着我们继续探索membranes在健康和疾病中的作用，我们获得了宝贵的见解，这些见解可能会彻底改变医学治疗并增强我们对生命过程的理解。