pyruvic acid

简明释义

丙酮酸

英英释义

例句

1.During glycolysis, glucose is converted into pyruvic acid, which is a key intermediate in cellular respiration.

在糖酵解过程中，葡萄糖被转化为丙酮酸，这是细胞呼吸中的一个关键中间产物。

2.The accumulation of pyruvic acid can lead to lactic acidosis during intense exercise.

在剧烈运动期间，丙酮酸的积累可能会导致乳酸酸中毒。

3.Some cancer cells rely on pyruvic acid for energy production through aerobic glycolysis.

一些癌细胞依赖于通过有氧糖酵解产生能量的丙酮酸。

4.The conversion of pyruvic acid to acetyl-CoA is an important step in fatty acid synthesis.

丙酮酸转化为乙酰辅酶A是脂肪酸合成中的一个重要步骤。

5.In the presence of oxygen, pyruvic acid is further oxidized in the mitochondria.

在氧气存在的情况下，丙酮酸在线粒体中进一步被氧化。

作文

Pyruvic acid, or 丙酮酸, is a crucial intermediate in several metabolic pathways throughout the body. It plays a vital role in cellular respiration and energy production, making it an essential component of our metabolism. Understanding pyruvic acid is key to comprehending how our bodies convert food into energy and how various nutrients are utilized by our cells.When carbohydrates are consumed, they are broken down into simpler sugars, which are then converted into pyruvic acid during the process of glycolysis. This process occurs in the cytoplasm of the cell and consists of ten enzymatic reactions that transform glucose into two molecules of pyruvic acid. This transformation is not only significant for energy production but also for the regulation of various metabolic pathways.Once formed, pyruvic acid can undergo several fates depending on the availability of oxygen. In aerobic conditions, where oxygen is plentiful, pyruvic acid is transported into the mitochondria, where it is further oxidized in the Krebs cycle, also known as the citric acid cycle. Here, it is converted into acetyl-CoA, which enters the cycle to produce ATP, the energy currency of the cell. This process is crucial for providing energy for cellular functions and sustaining life.In contrast, under anaerobic conditions, such as during intense exercise when oxygen levels are low, pyruvic acid is converted into lactate through a process called fermentation. This conversion allows for the continued production of ATP in the absence of oxygen, albeit less efficiently than aerobic respiration. The accumulation of lactate can lead to muscle fatigue, which is often experienced after strenuous physical activity.The significance of pyruvic acid extends beyond energy production. It is also involved in the synthesis of amino acids and fatty acids, playing a role in various biosynthetic pathways. For instance, it can be converted into alanine, an important amino acid used in protein synthesis. Additionally, pyruvic acid can serve as a precursor for gluconeogenesis, the process by which glucose is synthesized from non-carbohydrate sources, ensuring that our body maintains adequate glucose levels, especially during fasting or prolonged exercise.Moreover, pyruvic acid has garnered attention in the field of health and nutrition. Some studies suggest that it may have potential benefits for weight loss and athletic performance, leading to its inclusion in various dietary supplements. However, it is important to approach these claims with caution and to understand that while pyruvic acid plays an essential role in metabolism, it is just one piece of the complex puzzle of human physiology.In conclusion, pyruvic acid is a fundamental compound that is integral to our metabolic processes. Its ability to link various pathways, from energy production to biosynthesis, highlights its importance in maintaining overall health. By understanding the role of pyruvic acid in our bodies, we can appreciate the intricate mechanisms that sustain life and the importance of proper nutrition in supporting these processes.

丙酮酸，或pyruvic acid，是我们身体中几种代谢途径的重要中间产物。它在细胞呼吸和能量生产中发挥着至关重要的作用，使其成为我们新陈代谢的基本组成部分。理解pyruvic acid对于理解我们身体如何将食物转化为能量以及各种营养素如何被细胞利用至关重要。当碳水化合物被摄入时，它们会被分解为更简单的糖，然后在糖酵解过程中转化为pyruvic acid。这一过程发生在细胞的细胞质中，由十个酶促反应组成，将葡萄糖转化为两分子pyruvic acid。这一转化不仅对能量生产至关重要，而且对各种代谢途径的调节也很重要。一旦形成，pyruvic acid可以根据氧气的可用性而经历几种命运。在有氧条件下，氧气充足，pyruvic acid被运输到线粒体，在那里它在克雷布斯循环中进一步氧化，也称为柠檬酸循环。在这里，它被转化为乙酰辅酶A，进入循环以产生细胞的能量货币ATP。这个过程对提供细胞功能所需的能量并维持生命至关重要。相反，在缺氧条件下，例如在剧烈运动期间氧气水平低时，pyruvic acid通过发酵过程转化为乳酸。这种转化在缺氧的情况下允许继续生产ATP，尽管效率低于有氧呼吸。乳酸的积累可能导致肌肉疲劳，这通常在剧烈体育活动后出现。pyruvic acid的重要性不仅限于能量生产。它还参与氨基酸和脂肪酸的合成，在各种生物合成途径中发挥作用。例如，它可以转化为丙氨酸，这是一种在蛋白质合成中重要的氨基酸。此外，pyruvic acid可以作为糖异生的前体，糖异生是指从非碳水化合物来源合成葡萄糖的过程，确保我们的身体在禁食或长时间锻炼期间保持足够的葡萄糖水平。此外，pyruvic acid在健康和营养领域引起了关注。一些研究表明，它可能对减肥和运动表现有潜在益处，导致其被纳入各种膳食补充剂中。然而，重要的是要谨慎看待这些说法，并理解虽然pyruvic acid在新陈代谢中发挥着重要作用，但它只是人类生理复杂拼图中的一部分。总之，pyruvic acid是一个基本化合物，对我们的代谢过程至关重要。它将各种途径联系在一起的能力，从能量生产到生物合成，突显了它在维持整体健康方面的重要性。通过理解pyruvic acid在我们身体中的作用，我们可以欣赏维持生命的复杂机制，以及适当营养在支持这些过程中的重要性。