amino acid

简明释义

氨基酸

英英释义

例句

1.Vegetarians need to ensure they get enough complete amino acid 氨基酸 sources in their diet.

素食者需要确保他们的饮食中摄入足够的完整氨基酸来源。

2.Some amino acid 氨基酸 are known to boost mood and cognitive function.

一些氨基酸被认为能提升情绪和认知功能。

3.The body can produce some amino acid 氨基酸 on its own, but others must be obtained from food.

身体可以自行合成一些氨基酸，但其他的必须通过食物获取。

4.Athletes often take supplements that contain essential amino acid 氨基酸 to aid muscle recovery.

运动员常常服用含有必需氨基酸的补充剂以帮助肌肉恢复。

5.Proteins are made up of long chains of amino acid 氨基酸 units.

蛋白质由长链的氨基酸单元组成。

作文

Amino acids are the building blocks of proteins, which are essential for the structure and function of all living cells. Each protein is made up of a specific sequence of these organic compounds known as amino acids. There are 20 different types of amino acids that combine in various ways to form the countless proteins necessary for life. Understanding the role of amino acids is crucial for anyone interested in biology, nutrition, or health sciences.The structure of an amino acid consists of a central carbon atom, an amino group (-NH2), a carboxyl group (-COOH), a hydrogen atom, and a variable side chain known as the R group. The R group differs among the 20 amino acids, determining the unique characteristics of each one. For example, some amino acids are hydrophobic, while others are hydrophilic, influencing how proteins fold and function within the body.A common misconception is that all amino acids can be synthesized by the human body. In reality, there are two categories of amino acids: essential and non-essential. Essential amino acids cannot be produced by the body and must be obtained through diet. These include lysine, methionine, and tryptophan, among others. Non-essential amino acids, on the other hand, can be synthesized by the body from other compounds.Dietary sources of amino acids are abundant in both animal and plant foods. Meat, fish, eggs, and dairy products are rich in essential amino acids, making them vital components of a balanced diet. For vegetarians and vegans, it is important to consume a variety of plant-based proteins, such as legumes, nuts, and whole grains, to ensure adequate intake of all essential amino acids.In addition to their role in protein synthesis, amino acids play various roles in metabolic pathways. For instance, some amino acids serve as precursors for neurotransmitters, which are crucial for communication between nerve cells. Others are involved in the production of hormones and enzymes that regulate many physiological processes.Athletes often pay particular attention to amino acids because they can aid in muscle recovery and growth. Branched-chain amino acids (BCAAs), which include leucine, isoleucine, and valine, are particularly popular supplements among fitness enthusiasts. Research suggests that BCAAs can help reduce muscle soreness after exercise and stimulate protein synthesis, making them beneficial for those engaged in intense training.In conclusion, amino acids are fundamental to life, playing critical roles in the formation of proteins and various biochemical processes. A thorough understanding of amino acids can enhance our knowledge of nutrition, health, and overall well-being. Whether you are an athlete looking to optimize performance or simply someone interested in maintaining a healthy diet, recognizing the importance of amino acids is essential. By ensuring we have a balanced intake of these vital compounds, we can support our body's functions and promote a healthier lifestyle.

氨基酸是蛋白质的构建模块，对于所有活细胞的结构和功能至关重要。每种蛋白质都是由一系列特定的有机化合物组成，这些化合物被称为氨基酸。有20种不同类型的氨基酸以各种方式结合，形成生命所需的无数蛋白质。理解氨基酸的作用对于任何对生物学、营养或健康科学感兴趣的人来说都是至关重要的。氨基酸的结构由一个中心碳原子、一个氨基（-NH2）、一个羧基（-COOH）、一个氢原子和一个称为R基团的可变侧链组成。20种氨基酸之间的R基团不同，决定了每种氨基酸的独特特性。例如，某些氨基酸是疏水性的，而其他则是亲水性的，这影响了蛋白质在体内的折叠和功能。一个常见的误解是，并非所有的氨基酸都可以由人体合成。实际上，氨基酸分为两类：必需氨基酸和非必需氨基酸。必需氨基酸无法由身体合成，必须通过饮食获得。这些包括赖氨酸、蛋氨酸和色氨酸等。另一方面，非必需氨基酸可以由身体从其他化合物合成。饮食中丰富的氨基酸来源包括动物和植物食品。肉类、鱼类、鸡蛋和乳制品富含必需氨基酸，使它们成为均衡饮食的重要组成部分。对于素食者和严格素食者，摄入多种植物性蛋白质，如豆类、坚果和全谷物，以确保足够的必需氨基酸摄入是非常重要的。除了在蛋白质合成中的作用外，氨基酸在代谢途径中还发挥着各种作用。例如，某些氨基酸作为神经递质的前体，这对于神经细胞之间的交流至关重要。其他氨基酸参与激素和酶的产生，这些激素和酶调节许多生理过程。运动员通常特别关注氨基酸，因为它们可以帮助肌肉恢复和生长。支链氨基酸（BCAAs），包括亮氨酸、异亮氨酸和缬氨酸，尤其受到健身爱好者的欢迎。研究表明，BCAAs可以帮助减少运动后的肌肉酸痛并刺激蛋白质合成，因此对进行高强度训练的人有益。总之，氨基酸是生命的基础，在蛋白质的形成和各种生化过程中发挥着关键作用。全面理解氨基酸可以增强我们对营养、健康和整体福祉的认识。无论您是希望优化表现的运动员，还是只是想保持健康饮食的人，认识到氨基酸的重要性都是必不可少的。通过确保我们均衡摄入这些重要化合物，我们可以支持身体的功能，促进更健康的生活方式。