osmotic pressure

简明释义

渗透压力

英英释义

例句

1.In reverse osmosis systems, the osmotic pressure 渗透压 of the feed water must be overcome to purify the water.

在反渗透系统中，必须克服进水的osmotic pressure 渗透压 来净化水。

2.High osmotic pressure 渗透压 can lead to cell shrinkage in hypertonic solutions.

高osmotic pressure 渗透压 会导致细胞在高渗溶液中收缩。

3.Plants rely on osmotic pressure 渗透压 to absorb water through their roots.

植物依赖于osmotic pressure 渗透压 通过根部吸收水分。

4.The concept of osmotic pressure 渗透压 is essential in understanding how nutrients are transported in the bloodstream.

理解营养物质在血液中运输的方式时，osmotic pressure 渗透压 的概念是必不可少的。

5.The osmotic pressure 渗透压 in a saline solution is crucial for maintaining cell turgor.

盐水溶液中的osmotic pressure 渗透压 对维持细胞的膨压至关重要。

作文

Osmosis is a fundamental process in biology, crucial for the survival of living organisms. One key concept associated with osmosis is osmotic pressure, which plays a vital role in various biological functions. Understanding osmotic pressure not only enhances our knowledge of cellular processes but also aids in comprehending how different solutions interact with each other. Osmotic pressure can be defined as the pressure required to prevent the flow of water across a semipermeable membrane due to osmosis. This phenomenon occurs when two solutions of different concentrations are separated by a membrane that allows only certain molecules to pass through. In this case, water molecules move from an area of lower solute concentration to an area of higher solute concentration, creating a balance between the two sides of the membrane.The significance of osmotic pressure extends beyond mere scientific interest; it has practical implications in various fields such as medicine, agriculture, and food preservation. For instance, in medical treatments, understanding osmotic pressure is essential for administering intravenous fluids. Doctors must ensure that the osmolarity of the intravenous solution matches that of the patient's blood to avoid complications like hemolysis or dehydration. If the osmotic pressure of the intravenous fluid is too high, it can draw water out of the red blood cells, causing them to shrink and potentially leading to serious health issues.In agriculture, osmotic pressure is a critical factor in plant growth and irrigation practices. Plants absorb water through their roots, where the osmotic pressure inside the root cells is lower than that in the surrounding soil. This difference allows water to flow into the roots, providing the necessary hydration for the plant to thrive. However, in saline environments, where the osmotic pressure of the soil is higher due to salt concentration, plants may struggle to absorb sufficient water, leading to reduced growth and yield. Farmers need to manage soil salinity levels to maintain optimal osmotic pressure conditions for their crops.Moreover, osmotic pressure also plays a significant role in food preservation techniques. For example, in the process of making jams and jellies, high concentrations of sugar create a hypertonic environment that exerts high osmotic pressure. This pressure draws water out of microorganisms, effectively inhibiting their growth and extending the shelf life of the product. Understanding the principles of osmotic pressure allows food scientists to develop effective preservation methods that maintain the quality and safety of food products.In conclusion, osmotic pressure is a crucial concept that permeates various aspects of science and daily life. Its relevance in biological processes, medical applications, agricultural practices, and food preservation underscores its importance in both theoretical and practical contexts. By grasping the principles of osmotic pressure, we can better appreciate the intricate mechanisms that govern life and the ways we can manipulate these processes for beneficial outcomes. As we continue to explore the complexities of biology and chemistry, osmotic pressure will undoubtedly remain a key topic of interest and study.

渗透是生物学中的一个基本过程，对于生物体的生存至关重要。与渗透相关的一个关键概念是渗透压，它在各种生物功能中发挥着重要作用。理解渗透压不仅增强了我们对细胞过程的知识，还有助于理解不同溶液之间的相互作用。渗透压可以定义为由于渗透作用而阻止水通过半透膜流动所需的压力。当两种不同浓度的溶液被允许某些分子通过的膜分隔开时，这种现象就会发生。在这种情况下，水分子从低溶质浓度的区域移动到高溶质浓度的区域，从而在膜的两侧之间形成平衡。渗透压的重要性不仅限于科学兴趣；它在医学、农业和食品保存等多个领域具有实际意义。例如，在医疗治疗中，理解渗透压对于静脉输液的施用至关重要。医生必须确保静脉溶液的渗透压与患者血液的渗透压相匹配，以避免溶血或脱水等并发症。如果静脉液体的渗透压过高，它可能会将水从红细胞中抽出，导致红细胞收缩，并可能导致严重的健康问题。在农业中，渗透压是植物生长和灌溉实践中的一个关键因素。植物通过根部吸收水分，此时根细胞内的渗透压低于周围土壤中的渗透压。这种差异使水能够流入根部，为植物的生长提供必要的水分。然而，在盐碱环境中，由于盐浓度高，土壤的渗透压较高，植物可能难以吸收足够的水分，导致生长和产量减少。农民需要管理土壤盐度水平，以维持作物的最佳渗透压条件。此外，渗透压在食品保存技术中也发挥着重要作用。例如，在制作果酱和果冻的过程中，高浓度的糖创造了一个高渗透压的环境。这种压力将水分抽出微生物，从而有效抑制其生长，延长产品的保质期。理解渗透压的原理使食品科学家能够开发有效的保存方法，以保持食品产品的质量和安全性。总之，渗透压是一个贯穿科学和日常生活各个方面的重要概念。它在生物过程、医学应用、农业实践和食品保存中的相关性突显了其在理论和实践背景下的重要性。通过掌握渗透压的原理，我们可以更好地欣赏支配生命的复杂机制，以及我们如何操控这些过程以获得有益的结果。随着我们继续探索生物学和化学的复杂性，渗透压无疑将继续成为一个重要的研究主题。