encyst

简明释义

英[enˈsɪst]美[enˈsɪst]

vi. 被包在囊内

vt. 把……包在囊内

第 三 人 称 单 数 e n c y s t s

现 在 分 词 e n c y s t i n g

过 去 式 e n c y s t e d

过 去 分 词 e n c y s t e d

英英释义

单词用法

同义词

反义词

例句

1.In response to stress, the amoeba will encyst to survive until conditions improve.

为了应对压力，变形虫会包囊以便在条件改善时生存。

2.Some protozoa encyst during their life cycle to withstand unfavorable conditions.

一些原生动物在其生命周期中会包囊以抵御不利条件。

3.The infectious agent can encyst and remain dormant for years.

感染因子可以包囊并保持休眠状态多年。

4.The parasite can encyst in the host's tissues, making it difficult to eradicate.

寄生虫可以在宿主的组织中包囊，这使得根除变得困难。

5.Certain bacteria encyst when exposed to harsh environmental conditions.

某些细菌在暴露于恶劣环境条件下会包囊。

作文

In the world of biology, organisms often face numerous challenges to their survival. One fascinating survival strategy employed by some microorganisms is the ability to encyst. This process involves the formation of a protective capsule around the organism, allowing it to endure harsh environmental conditions. For example, certain protozoa can encyst when faced with extreme temperatures, lack of nutrients, or desiccation. By doing so, they can enter a dormant state and remain viable until conditions improve. This remarkable adaptation not only helps these organisms survive but also plays a crucial role in their life cycle. The encyst process typically begins with the organism sensing unfavorable conditions. Once detected, it initiates a series of physiological changes that lead to the formation of a thick protective wall around itself. This wall, or cyst, is often resistant to heat, radiation, and chemicals, making it extremely difficult for external threats to penetrate. For instance, the cysts of certain bacteria can withstand boiling water and extreme pH levels, which would normally be lethal to their active forms.Moreover, the ability to encyst is not limited to single-celled organisms. Some multicellular organisms, like certain types of worms, can also form cysts during their life cycles. This adaptation allows them to survive in environments where food sources are scarce or conditions are otherwise unfavorable. When conditions improve, these organisms can emerge from their cysts, resume their normal activities, and continue their life cycles.The implications of this survival strategy extend beyond the individual organisms. In ecosystems, the ability of species to encyst can have significant impacts on population dynamics and community structures. For example, when a particular microorganism can survive unfavorable conditions through encystment, it can rebound quickly once conditions become favorable again. This resilience can influence nutrient cycling, food web interactions, and even the overall health of an ecosystem.In addition to its ecological significance, the phenomenon of encyst has practical applications in various fields. For instance, in medicine, understanding how certain pathogens encyst can inform treatment strategies for diseases caused by these organisms. Cysts can serve as reservoirs for infection, and knowing how to target them could lead to more effective therapies. Similarly, in agriculture, managing the encysted forms of pests can help in developing sustainable pest control methods.In conclusion, the ability to encyst is a remarkable adaptation that highlights the resilience of life. Whether in the context of single-celled organisms or more complex life forms, encystment serves as a vital survival mechanism. It allows organisms to withstand adverse conditions, ensures the continuation of their life cycles, and influences broader ecological processes. As we continue to study these fascinating biological phenomena, we gain deeper insights into the intricate relationships between organisms and their environments, ultimately enhancing our understanding of life itself.

在生物学的世界中，生物体经常面临许多生存挑战。一些微生物采用的一个引人入胜的生存策略是能够包囊。这个过程涉及在生物体周围形成一个保护性胶囊，使其能够承受恶劣的环境条件。例如，当面临极端温度、缺乏营养或干燥时，某些原生动物可以包囊。通过这样做，它们可以进入休眠状态，并在条件改善时保持活力。这种显著的适应不仅帮助这些生物生存，而且在它们的生命周期中起着至关重要的作用。包囊过程通常开始于生物体感知不利条件。一旦检测到，它就会启动一系列生理变化，导致在自身周围形成厚厚的保护壁。这种壁或囊通常对热、辐射和化学物质具有抗性，使外部威胁很难渗透。例如，某些细菌的囊肿可以耐受沸水和极端pH值，而这些条件通常对它们的活跃形式是致命的。此外，包囊的能力并不限于单细胞生物。一些多细胞生物，如某些类型的蠕虫，在其生命周期中也可以形成囊肿。这种适应使它们能够在食物来源稀缺或其他条件不利的环境中生存。当条件改善时，这些生物可以从囊肿中出现，恢复正常活动，并继续其生命周期。这种生存策略的影响超越了个体生物体。在生态系统中，物种包囊的能力可能对种群动态和群落结构产生重大影响。例如，当某种微生物能够通过包囊在不利条件下生存时，一旦条件再次变得有利，它可以迅速反弹。这种韧性可以影响养分循环、食物网相互作用，甚至生态系统的整体健康。除了生态意义外，包囊现象在各个领域也有实际应用。例如，在医学上，了解某些病原体如何包囊可以为这些生物引起的疾病的治疗策略提供信息。囊肿可以作为感染的储存库，知道如何针对它们可能导致更有效的治疗。同样，在农业中，管理害虫的囊肿形式可以帮助开发可持续的害虫控制方法。总之，包囊的能力是一种显著的适应，突显了生命的韧性。无论是在单细胞生物还是更复杂的生命形式的背景下，包囊都是一种重要的生存机制。它使生物能够抵御不利条件，确保其生命周期的延续，并影响更广泛的生态过程。随着我们继续研究这些迷人的生物现象，我们对生物体与其环境之间错综复杂的关系有了更深入的理解，最终增强了我们对生命本身的理解。