archaea

简明释义

英[ɑːˈkiːə]美[ɑːrˈkiːə;ɑːrˈkeɪə]

n. 古生菌

英英释义

单词用法

同义词

反义词

例句

1.But this doesn't mean there are no viruses that affect the Archaea.

但是这也并不意味着没有病毒可以影响到古生菌。

2.While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication.

当类似古细菌的细菌存在于形态组织及基因组中时，其基因组复制方法表现出类似真核样。

3.As to importance, when originally identified as distinct, the archaea, too, were regarded as marginal-yet their methane-generating properties are now a factor in climate-change calculations.

至于其重要性，古菌群在最开始被认定为自成一类时，也被视为无关紧要——但是它们释放甲烷的特性现在已被纳入气候变化的考察因素。

4.Any form of life we find there, we won't have encountered before - there will probably be viruses, and we may have bacteria, archaea (other single-celled organisms) and... maybe fungi.

我们在那里发现的任何生命形式，以前都不曾见过——可能有病毒，我们还可能会发现细菌、古代细菌(其他单细胞生物)以及…真菌也有可能。

5.An archaean converts DNA into proteins very differently from, say, streptococcus-in fact, protein synthesis in archaea is more similar to the human process than to bacteria.

古生菌，比如链球菌，将DNA转录成蛋白质会非常困难——实际上与细菌相比，古生菌的蛋白质合成过程与人类的蛋白质合成过程更相似。

6.In this dissertation, we reviewed the development of bacterial taxonomy, the study on halophilic archaea. and the structure, function and application of BR protein.

本文对细菌分类学、嗜盐古菌的研究和BR蛋白结构、功能和应用进行了概述。

7.The third great domain of life, the archaea, look, under a microscope, like bacteria.

第三大“域”是古菌域，在显微镜下察看时，古菌看起来像细菌。

8.Or are there other biological domains hiding in the shadows—missed, like the archaea were for so long, because biologists have been using the wrong tools to look?

或者是否还有其他的生物“域”隐藏在某个神秘角落？ ——不为人所知，就好像古菌一样，因为生物学家误用观察工具所致，默默无闻多时。

9.Perhaps Archaea has been relegated to its seemingly second-class status because it is a relatively recent discovery—the separate domain was first proposed in 1977.

古生菌被归为不太重要的二等类别，或许是因为它是新近才被发现的——首次提议将古生菌作为单独的类别是在1977年。

10.Many archaea 古菌 are extremophiles, thriving in conditions that would be lethal to most organisms.

许多archaea 古菌 是极端嗜好者，能够在对大多数生物致命的条件下繁衍生息。

11.Some archaea 古菌 produce methane, making them important for studying climate change.

一些archaea 古菌 产生甲烷，这使它们在研究气候变化中变得重要。

12.The study of archaea 古菌 has provided insights into the origins of life on Earth.

对archaea 古菌 的研究为地球生命的起源提供了见解。

13.Researchers are exploring the potential uses of archaea 古菌 in biotechnology.

研究人员正在探索archaea 古菌 在生物技术中的潜在用途。

14.Scientists discovered that archaea 古菌 can survive in extreme environments like hot springs.

科学家发现，archaea 古菌 能在极端环境下生存，比如热泉。

作文

The study of life on Earth is a fascinating journey that reveals the incredible diversity of organisms that inhabit our planet. Among these organisms, there exists a group known as archaea, which are single-celled microorganisms that thrive in some of the most extreme environments on Earth. These tiny entities are not just simple life forms; they represent a unique branch of life that is distinct from bacteria and eukaryotes. Understanding archaea is crucial for several reasons, including their role in ecosystems, their evolutionary significance, and their potential applications in biotechnology.Firstly, archaea play a vital role in various ecosystems, especially in extreme environments such as hot springs, salt lakes, and deep-sea vents. They are often referred to as extremophiles because of their ability to survive and flourish in conditions that would be inhospitable to most other forms of life. For example, some archaea can withstand temperatures exceeding 100 degrees Celsius (212 degrees Fahrenheit) and high levels of salinity or acidity. Their metabolic processes contribute to nutrient cycling and energy flow in these ecosystems, making them essential players in maintaining ecological balance.Secondly, studying archaea provides valuable insights into the evolutionary history of life on Earth. Molecular studies have shown that archaea share a closer genetic relationship with eukaryotes (organisms with complex cells, including plants and animals) than with bacteria. This challenges the traditional view of the tree of life, which has long placed bacteria, archaea, and eukaryotes in separate branches. By examining the unique characteristics of archaea, scientists can better understand the origins of complex life and the processes that led to the diversification of life forms.Furthermore, archaea have significant potential in biotechnology and industrial applications. Their enzymes, known as extremozymes, are highly sought after for their stability and efficiency under extreme conditions. For instance, enzymes derived from archaea are used in various industries, including food processing, biofuel production, and pharmaceuticals. The ability of archaea to metabolize unusual substrates also opens up possibilities for bioremediation, where they can be employed to clean up environmental pollutants.In addition to their practical applications, archaea are also of great interest in astrobiology—the study of life in the universe. The resilience of archaea to extreme conditions makes them prime candidates for the search for extraterrestrial life. If life exists on other planets or moons with harsh environments, it is likely to resemble archaea in some form. This possibility encourages scientists to explore extreme habitats on Earth as analogs for extraterrestrial environments, further expanding our understanding of life's potential across the cosmos.In conclusion, archaea are a remarkable group of microorganisms that challenge our perceptions of life and its adaptability. Their unique characteristics, ecological roles, and potential applications underscore the importance of continued research in this field. As we delve deeper into the world of archaea, we not only uncover the secrets of some of the most resilient organisms on our planet but also gain insights that could lead to groundbreaking advancements in science and technology. The study of archaea is not just about understanding a single group of microbes; it is about exploring the very essence of life itself and its capacity to thrive in even the most inhospitable conditions.

对地球生命的研究是一段迷人的旅程，它揭示了栖息在我们星球上的生物的惊人多样性。在这些生物中，存在着一组被称为古菌的单细胞微生物，它们在地球上一些极端环境中茁壮成长。这些微小的生物不仅仅是简单的生命形式；它们代表了一条独特的生命分支，与细菌和真核生物截然不同。理解古菌至关重要，原因有几个，包括它们在生态系统中的作用、它们的进化意义以及它们在生物技术中的潜在应用。首先，古菌在各种生态系统中发挥着至关重要的作用，特别是在热泉、盐湖和深海热液喷口等极端环境中。由于它们能够在大多数其他生命形式无法生存的条件下生存和繁衍，因此它们通常被称为极端嗜好者。例如，一些古菌可以承受超过100摄氏度（212华氏度）的高温以及高盐或酸度。它们的代谢过程有助于这些生态系统中的养分循环和能量流动，使它们成为维持生态平衡的关键角色。其次，研究古菌提供了对地球生命进化历史的宝贵见解。分子研究表明，古菌与真核生物（包括植物和动物的复杂细胞生物）之间有更紧密的遗传关系，而不是与细菌。这挑战了长期以来将细菌、古菌和真核生物视为分开分支的传统生命树观点。通过检查古菌的独特特征，科学家可以更好地理解复杂生命的起源以及导致生命形式多样化的过程。此外，古菌在生物技术和工业应用中具有重要潜力。它们的酶，被称为极端酶，因其在极端条件下的稳定性和效率而备受追捧。例如，来自古菌的酶被广泛用于食品加工、生物燃料生产和制药等各个行业。古菌能够代谢不寻常底物的能力也为生物修复提供了可能性，即它们可以用来清理环境污染物。除了实际应用之外，古菌在天体生物学中也引起了极大的兴趣——即在宇宙中生命的研究。古菌对极端条件的耐受性使它们成为寻找外星生命的主要候选者。如果在其他行星或卫星上存在生命，它很可能以某种形式类似于古菌。这种可能性促使科学家探索地球上的极端栖息地作为外星环境的类比，进一步扩展我们对生命在宇宙中潜力的理解。总之，古菌是一组令人惊叹的微生物，它们挑战了我们对生命及其适应能力的看法。它们的独特特征、生态角色和潜在应用突显了在这一领域持续研究的重要性。当我们深入探索古菌的世界时，我们不仅揭示了地球上最具韧性的生物的一些秘密，还获得了可能导致科学和技术突破的见解。对古菌的研究不仅仅是关于理解一组微生物；它是关于探索生命本质及其在最不宜生存的条件下蓬勃发展的能力。