amphipathic molecule

简明释义

两亲水脂分子

英英释义

例句

1.In biochemistry, the structure of an amphipathic molecule can influence its function in biological systems.

在生物化学中，两亲分子的结构可以影响其在生物系统中的功能。

2.An amphipathic molecule is crucial in forming cell membranes, as it allows for both hydrophilic and hydrophobic interactions.

一个两亲分子在形成细胞膜中至关重要，因为它允许亲水和疏水相互作用。

3.Phospholipids are a type of amphipathic molecule that form the basic structure of cell membranes.

磷脂是一种构成细胞膜基本结构的两亲分子。

4.The interaction between water and an amphipathic molecule leads to the formation of micelles in solution.

水与两亲分子之间的相互作用导致了溶液中胶束的形成。

5.Detergents are examples of amphipathic molecules that help to break down grease and oil in cleaning products.

洗涤剂是帮助分解清洁产品中油脂和油的两亲分子的例子。

作文

In the study of biology and chemistry, understanding the properties of molecules is essential for grasping how they interact within living organisms. One particularly important type of molecule is the amphipathic molecule (两亲分子), which plays a crucial role in various biological processes. An amphipathic molecule is characterized by having both hydrophilic (water-attracting) and hydrophobic (water-repelling) regions. This unique structure allows these molecules to interact with both polar and nonpolar substances, making them vital for the formation of cellular structures such as membranes.Cell membranes are primarily composed of phospholipids, which are classic examples of amphipathic molecules (两亲分子). Each phospholipid molecule has a hydrophilic 'head' that is attracted to water and two hydrophobic 'tails' that repel water. When phospholipids are placed in an aqueous environment, they spontaneously arrange themselves into a bilayer. The hydrophilic heads face outward towards the water on both sides, while the hydrophobic tails are tucked away from the water, creating a barrier that separates the interior of the cell from its external environment.The presence of amphipathic molecules (两亲分子) in cell membranes is not just about forming a protective barrier. It also enables the selective permeability of the membrane, allowing certain molecules to pass through while keeping others out. This property is essential for maintaining homeostasis within the cell, as it regulates the internal environment and facilitates communication with the outside world.Additionally, amphipathic molecules (两亲分子) are involved in various biochemical processes, including the formation of micelles and liposomes. Micelles, which are spherical aggregates of amphipathic molecules, are formed when these molecules are mixed with water. The hydrophobic tails cluster together in the center, while the hydrophilic heads face outward, effectively trapping nonpolar substances in the core. This property is utilized in the digestion and absorption of fats in the human body, where bile salts (which are amphipathic molecules (两亲分子)) help emulsify dietary fats, making them easier to digest.Liposomes are another application of amphipathic molecules (两亲分子). These are synthetic vesicles made from phospholipids and can be used in drug delivery systems. Their ability to encapsulate both hydrophilic and hydrophobic drugs makes them versatile carriers, enhancing the bioavailability of medications and improving therapeutic outcomes.In conclusion, the significance of amphipathic molecules (两亲分子) cannot be overstated in the realms of biology and chemistry. Their unique properties facilitate the formation of cellular structures, regulate membrane permeability, and play a vital role in biochemical processes. Understanding how these molecules function provides insight into the complexity of life at the molecular level and underscores the intricate relationships between structure and function in biological systems.