lipid

简明释义

英[ˈlɪpɪd]美[ˈlɪpɪd]

n. 脂质；油脂

英英释义

单词用法

同义词

反义词

例句

1.Objective: To investigate abnormal thyroid function on blood lipid levels.

目的：探讨甲状腺功能异常对血脂水平的影响。

2.The researchers, from a variety of institutions and universities, did identify four specific genes that could directly affect lipid levels.

来自不同研究机构和大学的研究者们已经鉴定了四个特异性基因，这些基因能够直接影响脂类水平。

3.Here these designer lipid-like peptides may play a key role in improving effective drug delivery systems.

而类脂多肽将在提高药物输送系统效率方面起到重要作用。

4.Conjugates of protein and lipid occur as lipoproteins.

蛋白质和脂肪结合产生脂蛋白。

5.Objective:To study the effect of compound monascus preparation to regulate blood lipid.

目的：研究复方红曲制剂对实验动物调节血脂的作用。

6.One possible mechanism, demonstrated in animal studies, is that being sedentary may affect lipid metabolism.

动物实验显示的一个可能原理是，久坐会影响脂类代谢。

7.Xanthomata and xanthelasmas are more common in lipid disorders than in obstructive jaundice.

黄瘤症和黄斑瘤与阻塞性黄疸相比更易出现在脂类代谢紊乱中。

8.The disorder of lipid metabolism is major pathogenesis of the disease.

脂类代谢失调是脂肪肝的主要发病机理。

9.Cholesterol, a type of lipid, is found in foods from animal sources.

胆固醇也是一种油脂，存在于动物来源的食物中。

10.Lipids are essential for storing energy in the body.

脂质（lipid）在体内储存能量是必不可少的。

11.A diet high in saturated lipids can lead to health problems.

高饱和脂质（lipid）的饮食可能导致健康问题。

12.Cell membranes are primarily composed of lipids.

细胞膜主要由脂质（lipid）组成。

13.Some lipids act as signaling molecules in the body.

一些脂质（lipid）在体内作为信号分子发挥作用。

14.Omega-3 fatty acids are a type of healthy lipid.

Omega-3脂肪酸是一种健康的脂质（lipid）。

作文

Lipids play a crucial role in the biology of all living organisms. They are organic compounds that are insoluble in water but soluble in organic solvents. One of the most common types of lipids is fats, which are composed of glycerol and fatty acids. These molecules are essential for storing energy, as they provide more than twice the energy per gram compared to carbohydrates. In addition to their role in energy storage, lipids also serve as structural components of cell membranes. The phospholipid bilayer, for instance, is fundamental to the integrity and functionality of cells. This bilayer allows cells to maintain a distinct internal environment, which is vital for various cellular processes. Moreover, lipids are involved in signaling pathways within the body. Hormones such as steroids are derived from lipids and are critical for regulating numerous physiological functions, including metabolism, immune response, and reproductive processes. For example, cholesterol, a type of lipid, is not only a component of cell membranes but also a precursor for steroid hormones like testosterone and estrogen. Another important category of lipids is phospholipids, which contain phosphate groups. These molecules are key players in the formation of cellular membranes. Their amphipathic nature—having both hydrophilic (water-attracting) and hydrophobic (water-repelling) properties—allows them to form bilayers that create a barrier between the inside of the cell and its external environment. This property is essential for maintaining the cell's homeostasis and facilitating communication between cells. In addition to their structural and functional roles, lipids are also involved in nutrient absorption. Certain vitamins, known as fat-soluble vitamins (A, D, E, and K), require lipids for their absorption in the digestive tract. This highlights the importance of lipids in maintaining overall health and well-being. However, it is essential to understand that not all lipids are created equal. While some lipids, such as those found in fish and nuts, are beneficial for health, others, particularly trans fats and excessive saturated fats, can lead to health issues, including heart disease and obesity. Therefore, it is crucial to focus on consuming healthy fats while limiting the intake of harmful ones. In conclusion, lipids, or 脂质, are indispensable to life, serving multiple roles from energy storage to cellular structure and signaling. Understanding the different types of lipids and their functions can help individuals make informed dietary choices that promote better health. As research continues to unveil the complexities of lipid biology, it becomes increasingly clear that these molecules are not just a source of energy but are integral to the very fabric of life itself.

脂质在所有生物体的生物学中发挥着至关重要的作用。它们是有机化合物，在水中不溶解，但在有机溶剂中溶解。最常见的脂质类型之一是脂肪，它们由甘油和脂肪酸组成。这些分子对于储存能量至关重要，因为它们每克提供的能量超过碳水化合物的两倍。除了在能量储存中的作用外，脂质还作为细胞膜的结构成分。例如，磷脂双层是细胞完整性和功能的基础。该双层使细胞能够维持独特的内部环境，这对于各种细胞过程至关重要。 此外，脂质还参与体内的信号传导途径。激素如类固醇源自脂质，对于调节许多生理功能至关重要，包括新陈代谢、免疫反应和生殖过程。例如，胆固醇，一种脂质，不仅是细胞膜的组成部分，还是类固醇激素（如睾酮和雌激素）的前体。 另一类重要的脂质是磷脂，它们含有磷酸基团。这些分子是细胞膜形成的关键角色。它们的两亲性——既有亲水（吸水）又有疏水（排水）特性——使它们能够形成双层，创建细胞内部和外部环境之间的屏障。这一特性对于维持细胞的稳态和促进细胞之间的沟通至关重要。 除了它们的结构和功能角色外，脂质还参与营养物质的吸收。某些维生素，被称为脂溶性维生素（A、D、E和K），需要脂质在消化道中的吸收。这突显了脂质在维持整体健康和福祉中的重要性。 然而，理解并非所有脂质都是相同的至关重要。虽然某些脂质，如鱼类和坚果中的脂质，对健康有益，但其他脂质，特别是反式脂肪和过量饱和脂肪，可能导致健康问题，包括心脏病和肥胖。因此，关注摄入健康脂肪，同时限制有害脂肪的摄入是至关重要的。 总之，脂质，或脂质，对生命不可或缺，从能量储存到细胞结构和信号传导，发挥着多重角色。理解不同类型的脂质及其功能可以帮助个人做出明智的饮食选择，以促进更好的健康。随着研究继续揭示脂质生物学的复杂性，越来越清楚的是，这些分子不仅仅是能量来源，而是生命本身的织物中不可或缺的一部分。