endospores

简明释义

英[ˈɛndəʊspɔːz]美[ˈɛndoʊspɔrz]

n. 内孢子（endospore 复数）

英英释义

单词用法

同义词

反义词

例句

1.This pulmonary infection is due to coccidioidomycosis, as evidenced by the two large spherules filled with endospores.

粗球孢子菌病肺部感染灶，可见两个大球体充满内生孢子。

2.This pulmonary infection is due to coccidioidomycosis, as evidenced by the two large spherules filled with endospores.

粗球孢子菌病肺部感染灶，可见两个大球体充满内生孢子。

3.Note how the spherule at the left is bursting to expel its endospores, which grow and continue the infection.

可见左边的大球体破裂并释放出内部的内生孢子，内生孢子生长并引起持续感染。

4.Bacterial endospores are the most resistant living structures, known.

内生芽孢是目前所知的最具抗性的生命活体结构。

5.The spherule contains endospores.

小球体包含内生孢子。

6.Bacillus anthracis produces endospores, which can survive in harsh environments for many years.

炭疽杆菌产生的内生孢子可以在恶劣环境中存活多年。

7.The ability of some bacteria to form endospores allows them to withstand extreme temperatures.

一些细菌形成内生孢子的能力使它们能够承受极端温度。

8.In the laboratory, scientists often study endospores to understand bacterial resistance mechanisms.

在实验室中，科学家们常常研究内生孢子以了解细菌的抗性机制。

9.Food preservation techniques aim to eliminate endospores that can spoil food.

食品保存技术旨在消除可能导致食物变质的内生孢子。

10.Some soil bacteria can produce endospores that help them survive drought conditions.

一些土壤细菌可以产生内生孢子，帮助它们在干旱条件下生存。

作文

In the fascinating world of microbiology, one of the most remarkable features observed in certain bacteria is the formation of endospores. These endospores are highly resistant structures that allow bacteria to survive extreme environmental conditions. From intense heat and radiation to desiccation and chemical exposure, endospores provide a survival mechanism that ensures the continuity of bacterial species. To better understand the significance of endospores, we must delve into their structure, formation, and the roles they play in the life cycle of bacteria. The process of endospore formation begins when bacteria encounter unfavorable conditions, such as nutrient depletion or harsh environmental changes. During this process, known as sporulation, the bacterium undergoes a series of complex physiological changes. The cell's DNA is replicated, and a portion of the cytoplasm is enclosed by a thick protective coat, forming the endospore. This coat is composed of durable proteins and peptidoglycan, making it incredibly resilient against external threats. Once formed, endospores can remain dormant for extended periods, sometimes even centuries. This dormancy is crucial for the survival of bacteria, as it allows them to withstand conditions that would otherwise be lethal. When favorable conditions return, the endospore can germinate, reviving the bacterium and allowing it to resume its metabolic activities. This ability to endure harsh environments and then reactivate is what makes endospores so vital in the microbial world. Furthermore, endospores have significant implications in various fields, including medicine and food safety. For instance, certain pathogenic bacteria, such as Bacillus anthracis, which causes anthrax, produce endospores that can be easily transmitted and pose serious health risks. Understanding how these endospores function can help in developing effective strategies to combat bacterial infections. In the realm of food safety, endospores present a unique challenge. Many foodborne pathogens, like Clostridium botulinum, form endospores that can survive cooking and other preservation methods. This resilience necessitates stringent food handling and processing practices to prevent outbreaks of foodborne illnesses. In conclusion, the study of endospores offers valuable insights into the survival strategies of bacteria. Their ability to withstand extreme conditions and remain dormant for long periods underscores their importance in both environmental and medical contexts. As researchers continue to explore the complexities of endospores, we gain a deeper appreciation for the resilience of life at the microscopic level, highlighting the intricate balance between survival and adaptation in the microbial world. Understanding endospores not only enriches our knowledge of microbiology but also equips us with the tools to address the challenges posed by bacterial pathogens in our daily lives.

在微生物学的迷人世界中，某些细菌所观察到的最显著特征之一是形成endospores。这些endospores是高度耐受的结构，使细菌能够在极端环境条件下生存。从强烈的热量和辐射到干燥和化学暴露，endospores提供了一种生存机制，确保细菌物种的延续。为了更好地理解endospores的重要性，我们必须深入其结构、形成过程以及它们在细菌生命周期中的作用。 endospore形成的过程始于细菌遇到不利条件时，例如营养物质的耗尽或恶劣的环境变化。在这个过程中，称为孢子形成，细菌经历了一系列复杂的生理变化。细胞的DNA被复制，细胞质的一部分被厚厚的保护外壳包围，形成了endospore。这个外壳由耐用的蛋白质和肽聚糖组成，使其对外部威胁具有极强的抵抗力。 一旦形成，endospores可以保持休眠状态很长时间，有时甚至达到几个世纪。这种休眠对于细菌的生存至关重要，因为它使它们能够抵御本来会致命的条件。当有利条件恢复时，endospore可以萌发，复活细菌，使其恢复代谢活动。这种忍耐恶劣环境然后重新激活的能力就是使endospores在微生物世界中如此重要的原因。 此外，endospores在医学和食品安全等多个领域具有重要意义。例如，某些病原细菌，如炭疽杆菌（Bacillus anthracis），产生的endospores可以轻易传播并构成严重的健康风险。了解这些endospores如何运作可以帮助制定有效的策略来对抗细菌感染。 在食品安全领域，endospores提出了独特的挑战。许多食源性病原体，如肉毒梭菌（Clostridium botulinum），形成的endospores能够抵御烹饪和其他保存方法。这种韧性需要严格的食品处理和加工实践，以防止食源性疾病的爆发。 总之，研究endospores提供了对细菌生存策略的宝贵见解。它们在极端条件下生存并保持长时间休眠的能力强调了它们在环境和医学背景中的重要性。随着研究人员继续探索endospores的复杂性，我们对微观生命的韧性有了更深的理解，突显了微生物世界中生存与适应之间微妙的平衡。理解endospores不仅丰富了我们对微生物学的知识，还使我们具备了应对日常生活中细菌病原体带来的挑战的工具。