vacuole

简明释义

英[ˈvækjuəʊl]美[ˈvækjuoʊl]

n. [细胞] 液泡；[地质] 空泡

英英释义

单词用法

同义词

反义词

例句

1.Conclusion: FSH cell vacuole and its contents were related to castration. It may be the characteristic change of function consumption of FSH cells.

结论：FSH细胞内液泡及其内含物与去势有关，可能为FSH细胞功能衰竭状态的特征性改变。

2.This paper analyzes detailed the causation of the vacuole, irregular crack, sand out, surface pit, and brings up treatment and prevention measure.

本文对水泥地面经常出现的空鼓、不规则裂缝、起砂和麻面等问题原因进行了详细分析，并提出了处理与预防措施。

3.The process of pollen abortion begins with vacuole formation and gradual enlargement in the tetrad.

花粉败育的过程从四分体开始，细胞质内液泡逐渐增大，接着细胞器解体，细胞核解体。

4.The tapetum of P. hortorum belongs to periplasmodial tapetum. The invasion into the locule occurs when microspore form large vacuole in its cytoplasm.

天竺葵的绒毡层属周原质团绒毡层，其原生质体侵入药室的时间发生在小孢子中大液泡开始形成的时期。

5.Mitochondria dissolved into vacuole in intestinal mucous membrane epithelial cells.

肠上皮细胞的线粒体空泡化。

6.Tonoplast the membrane that surrounds the large central vacuole of plant cells.

液泡膜：植物细胞中包围中央大液泡的膜。

7.In cells which began degeneration and thus stopped secretion, enzyme reaction product was localized mainly on the vacuole membrane.

分泌活动停止后处于解体状态的细胞内，反应产物主要定位于液泡膜上。

8.The food vacuole was surrounded by one membrane and the malarial pigment was found.

虫体经胞口摄食，食物泡由单层膜包绕，内有疟色素。

9.The larger nucleolus was higher in electron-density, but the inside structure was not even, sometimes there was a very large nucleolar vacuole in it.

大核仁电子密度较高，质地不均匀，有时有一个体积很大的核仁泡位于其中。

10.The plant cell's vacuole is essential for storing nutrients and maintaining turgor pressure.

植物细胞的液泡对储存养分和维持膨压至关重要。

11.Some protists have contractile vacuoles that help to expel excess water.

一些原生生物具有收缩液泡，帮助排出多余的水分。

12.The large central vacuole in a mature plant cell helps to keep the cell firm.

成熟植物细胞中的大型中央液泡有助于保持细胞的坚挺。

13.In animal cells, the vacuole is smaller and often involved in the transport of materials.

在动物细胞中，液泡较小，通常参与物质的运输。

14.When a plant wilts, it is often due to the loss of water from the vacuole.

当植物枯萎时，通常是由于液泡中水分的流失。

作文

In the study of cell biology, understanding the various organelles within a cell is crucial. One such organelle that plays a vital role in plant cells is the vacuole. The vacuole is a membrane-bound sac that is primarily used for storage and maintaining the cell's internal environment. It can store nutrients, waste products, and even help in maintaining turgor pressure, which is essential for keeping the plant upright. The significance of the vacuole cannot be overstated. In plant cells, the vacuole can occupy up to 90% of the cell's volume, making it a dominant feature. This large size allows it to store a significant amount of water and other substances, which is particularly beneficial during dry conditions. When a plant experiences drought, the vacuole can release stored water to help maintain cellular functions and overall plant health.Moreover, the vacuole also plays a role in the breakdown of waste products. Within the vacuole, enzymes can degrade complex molecules into simpler ones, which can then be utilized or removed by the cell. This process is vital for cellular maintenance and helps prevent the accumulation of harmful substances.In addition to storage and waste management, the vacuole is involved in plant growth. As the vacuole fills with water, it exerts pressure against the cell wall, causing the cell to expand. This expansion is a key factor in how plants grow taller and develop new leaves. Without a properly functioning vacuole, a plant would struggle to maintain its structure and could ultimately wilt and die.Interestingly, the vacuole is not exclusive to plant cells. Animal cells also contain smaller vacuoles, although their function differs slightly. In animal cells, vacuoles are more involved in transport and storage of materials rather than maintaining turgor pressure. They also play a role in processes such as endocytosis and exocytosis, allowing cells to absorb and expel materials efficiently.In conclusion, the vacuole is an essential organelle that contributes significantly to the functionality of both plant and animal cells. Its ability to store substances, manage waste, and aid in growth highlights its importance in the overall health of a cell. Understanding the role of the vacuole provides insight into how cells operate and maintain homeostasis, which is fundamental to all living organisms. As we continue to explore the complexities of cellular biology, the vacuole remains a fascinating subject of study, revealing the intricate processes that sustain life on Earth.

在细胞生物学的研究中，理解细胞内的各种细胞器至关重要。其中一个在植物细胞中发挥重要作用的细胞器是液泡。液泡是一个膜结合的囊泡，主要用于储存和维持细胞的内部环境。它可以存储营养物质、废物，甚至帮助维持膨压，这对保持植物直立至关重要。液泡的重要性不容小觑。在植物细胞中，液泡的体积可以占到细胞体积的90%，使其成为一个显著的特征。这种大尺寸使其能够存储大量水分和其他物质，这在干旱条件下尤其有利。当植物经历干旱时，液泡可以释放储存的水分，以帮助维持细胞功能和整体植物健康。此外，液泡还在废物降解中发挥作用。在液泡内，酶可以将复杂分子降解为更简单的分子，然后被细胞利用或排除。这一过程对于细胞维护至关重要，有助于防止有害物质的积累。除了储存和废物管理外，液泡还参与植物生长。当液泡充满水分时，它会对细胞壁施加压力，导致细胞扩张。这种扩张是植物长高和发展新叶的关键因素。如果没有正常运作的液泡，植物将难以维持其结构，最终可能枯萎和死亡。有趣的是，液泡并不仅限于植物细胞。动物细胞也含有较小的液泡，尽管它们的功能略有不同。在动物细胞中，液泡更多地参与材料的运输和储存，而不是维持膨压。它们还在内吞作用和外排作用等过程中发挥作用，使细胞能够有效地吸收和排出物质。总之，液泡是一个重要的细胞器，对植物和动物细胞的功能贡献巨大。它储存物质、管理废物和促进生长的能力突显了其在细胞整体健康中的重要性。理解液泡的作用提供了对细胞如何运作和维持稳态的深入了解，这是所有生物体的基础。随着我们继续探索细胞生物学的复杂性，液泡仍然是一个引人入胜的研究对象，揭示了维持地球生命的复杂过程。